WASHINGTON — Sens. Alex Padilla, D-Calif., and Rand Paul, R-Ky., proposed legislation this week that would put so-called documented “Dreamers,” or foreign citizens who grew up legally in the U.S. on a parent’s work visa but then aged out, on a path to permanent residency. A rare bipartisan effort on immigration, the bill would allow more than 200,000 people who came to the U.S.