The decision to launch a full-on attack on Iran would be in the gray area between the president's powers as commander in chief and the Constitution's mandate that only Congress can declare war.
A bipartisan pair in the House and a Democrat in the Senate have moved to force votes in the coming days on requiring congressional approval before U.S. troops could take offensive action against Iran.
A resolution by Senator Tim Kaine of Virginia would require congressional approval before U.S. troops could engage in hostilities against Iran. He said Americans don't want another "forever war."
