You may be eligible to apply for a Adjustment of Status as an immigrant worker, immigrant investor or a Physician through the National Interest Waiver. USCIS categorizes employment visa categories as follows:

• First preference immigrant worker: workers who possess “extraordinary ability” in the sciences, arts, education, business or athletics; notable professors or researchers; or multinational managers or executives meeting a list of government criteria
• Second preference immigrant worker: transferring executives or managers of multinational companies
• Third preference immigrant worker: skilled workers whose jobs would require a minimum of two years’ training or work experience
• Fourth preference immigrant worker: unskilled workers who would require less than two years’ training or experience — not including temporary or seasonal workers
• **USCIS places limitations on the number of visas issued based on the beneficiaries home country.