A bipartisan group of four senators proposed on Tuesday easing visa limits for highly skilled immigrants and foreign students, a move that challenges Congressional leaders on their fixed positions on the issue of immigration during an election year.
Two Democrats, Senators Mark Warner of Virginia and Chris Coons of Delaware, and two Republicans, Senators Marco Rubio of Florida and Jerry Moran of Kansas, introduced the legislation, which is a break for both parties. Democrats have traditionally held highly skilled worker visas as a bargaining chip for measures on lower-skilled immigrants that are far less politically popular. Many Republicans have opposed any expansion of visas.





