For certain application procedures, the USCIS offers the possibility of accelerated handling: Premium Processing. The U.S. Citizenship and Immigration Services guarantees processing within 15 calendar days of receipt of the application against payment of a fee of currently US$ 2,500 and by means of application form I-907 "Request for Premium Processing Service". Unfortunately, not all procedures can be accelerated in this way. However, the Premium Processing procedure can be selected for the common work visas (e.g. L or H visas).
Please note: Due to the effects of the COVID-19 crisis the Premium Processing Service was suspended and has only been gradually reintroduced since June 1, 2020 in several phases for I-129 applications (L, O, H, P visas etc.) and I-140 petitions (Employment-based Green Cards).