The document summarizes information about various US work visas including H-1B, L-1, F-1 Optional Practical Training (OPT) and F-1 STEM OPT. It provides details on eligibility requirements, application processes and approval durations for these visa categories. Additionally, it discusses recent trends in denial rates for L-1 visas and areas of focus by USCIS in reviewing L-1 petitions. An overview is also given of key publications and proposed legislation related to US immigration.