By Eileen M. Martin ( August 28, 2023, 1:49 PM EDT) -- The E-1 visa is a very flexible visa for working in the U.S. One reason is that it is available to work for companies in the U.S or for companies that are only located outside the U.S. This makes it one of the very few visa classifications for which no ties to a specific U.S. entity are required. For entrepreneurs — including sole proprietors in Canada who have U.S. clients — this type of visa is often their first port of call....