One of the major benefits of L-1A nonimmigrant visas is they are considered “dual intent visas.” This means that they allow foreign nationals to enter and stay within the U.S. as nonimmigrants, while having the intent of possibly immigrating to the U.S. permanently. Typically, processing an L-1A visa to a green card takes about one year (depending on processing times). However, it can take longer for complicated cases.