We have completed over 10,000 expert opinion letters for a wide variety of immigration petitions.
GCS specializes in providing an expert opinion letter, wherein an evaluation or an assessment is performed by an independent industry expert or university professor to discuss the eligibility of the applicant to pursue a visa in the United States. This letter contains a statement of evidentiary support for the applicant that is well-documented, presenting sufficient evidence and information to help towards establishing the specific criteria applicable to the beneficiary.
Considering the importance of the letters, it is worth the time and effort for an applicant to seek expert opinion letters who could independently qualify for a visa and discuss the content of the expert opinion letter with the writers to increase the chance of approval. The letter must contain an explanation of the writer’s accomplishments, how they know you, and clearly delineate that you are nationally or internationally recognized and have made significant contributions to your field.
When submitting your application, please specify the type of visa you are applying for. We service all petition types. Please see list for your visa and required documentation.
Review the documents based on the type of visa you are applying for
The H-1B program allows companies in the United States to temporarily employ foreign workers in occupations that require the theoretical and practical application of a body of highly specialized knowledge and a bachelor's degree or higher in the specific specialty, or its equivalent. H-1B specialty occupations may include fields such as science, engineering and information technology, and fields such as teaching and accounting.
Candidate's Job Duties and Responsibilities
Certificates of Employment/Proof of Employment
Academic records (diploma and transcripts)
Candidate's CV with detailed employment history
RFE letter (if applicable)
Petition Letter (if applicable)
The L-1B non-immigrant classification enables a U.S. employer to transfer a professional employee with specialized knowledge relating to the organization's interests from one of its affiliated foreign offices to one of its offices in the United States.
Specialized Knowledge means special knowledge possessed by an individual of the petitioning organization's product, service, research, equipment, techniques, management, or other interests and its application in international markets, or an advanced level of knowledge or expertise in the organization's processes of procedures.
Documents showing that employees, including business owners, were employed outside of the USA for one year in the last three years by a company that has common ownership with the (new or existing) US company they plan to work for under the L1 scheme
Old and New Job Duties and Responsibilities
The L-1A non-immigrant classification enables a U.S. employer to transfer an executive or manager from one of its affiliated foreign offices to one of its offices in the United States.
The legal definition of a managerial or executive role must be followed, and a detailed description of duties must be enclosed along with the petition. An executive or managerial capacity requires a certain level of authority and mix of job duties.
Documents showing that employees, including business owners, were employed outside of the USA for one year in the last three years by a company that has common ownership with the (new or existing) US company they plan to work for under the L1 scheme
Old and New Job Duties and Responsibilities
The O-1 non-immigrant visa is for the individual who possesses extraordinary abilityin the sciences, arts, education, business, or athletics, or who has a demonstrated record of extraordinary achievement in the motion picture or television industry andhas been recognized nationally or internationally for those achievements.
Candidate's CV with detailed employment history
Reference letters from previous employers/industry colleagues
Academic records (diploma and transcripts)
The EB-1 visa allows certain multinational Executives and Managers and people with extraordinary ability in science, art, education, business, or sport to gain legal permanent residence in the US. You may be eligible for an employment-based, first-preference visa if you have an extraordinary ability, are an outstanding professor or researcher, or are a multinational executive or manager.
Candidate's CV with detailed employment history
Reference letters from previous employers/industry colleagues
Academic records (diploma and transcripts)
The EB-2 visa allows those in certain specialized professions – such as doctors, business managers, and educators – who have a master's degree or higher to gain lawful permanent residence in the US. You may be eligible for an employment-based, second preference visa if you are a member of the professions holding an advanced degree or its equivalent, or a an alien who has exceptional ability.
Candidate's CV with detailed employment history
Reference letters from previous employers/industry colleagues
Academic records (diploma and transcripts)
P-1A applies to those who will come temporarily to the U.S. solely for the purpose of performing at a specific athletic competition. It is also for professional or amateur athletes coming temporarily to the United States solely to perform in a specific theatrical ice skating production or tour, individually or as part of a group.
Proof of consultation with a labor organization
An itinerary of events or performances with dates and durations for each event
Contracts with U.S sports leagues or teams
Evidence of eligibility that the individual athlete or the team is nationally or internationally recognized as outlined in the requirements section
P-1B applies to those who are coming to the United States temporarily to perform as a member of an entertainment group that has been recognized internationally as outstanding in the discipline for a sustained and substantial period of time.
Consultation with an appropriate labor organization
Contracts of the group with the sponsors or oral agreement summaries
Itinerary with events and performances including dates and durations of each event
Proof of the group’s age (more than 1 year since it was established) and each person’s membership or employment in the group
Proof that the individual or group of entertainers is eligible for the visa and has achieved national or international recognition as outlined in the requirements section
P-3 applies to those who are coming temporarily to perform, teach or coach as artists or entertainers, individually or as part of a group, under a program that is culturally unique.
Proof that the performance being presented or taught is culturally unique
Evidence that the coach or performer has the skills for this culturally unique event
We recommend you contact your school to find out what type of report is required. The most common types of reports for education are
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Ōrder NowExpert Opinion Letters are completed by professors or distinguished industry authority in order to provide an “Expert Opinion” for extraordinary ability petitions, responding to RFE's, or for any other case that requires the opinion of an expert in the field. It specifically addresses an individual's academic and employment experience qualifications to satisfy U.S. Citizenship and Immigration’s requirements.
Requirements vary depending on the type of visa you are applying for. Please refer to the “Documents Required” section for a detailed information.
Our standard processing is 7 to 9 business days. Rush options are also available are needed for an additional fee.
Our rates vary per visa and letter type. All you need to do is start your application, upload your documents and request for a quote. We will respond to you asap with the quotation on how much the cost will be.
Several factors are considered when applying for a US visa, and not based on the expert opinion letter alone. In such instances that refunds are requested, it will be reviewed accordingly and will be given (if any) at our sole discretion.