Fifty-three percent of voters oppose the U.S. military action against Iran, while 40 percent support it. … Seventy-four percent of voters oppose sending U.S. ground troops into Iran, while 20 percent support it.

‘Voters are unenthusiastic about the air attack on Iran and there is overwhelming opposition to putting American troops on Iranian soil to fight a ground war,’ said Quinnipiac University Polling Analyst Tim Malloy.

When Sen. Ron Johnson was asked last week why GOP lawmakers were so reluctant to assert their legal authority on matters of national security, the Wisconsin Republican replied that it’s a mistake to look to Congress for limits on presidential power. “I think the primary restraint on any president of [the] United States is public opinion,” the senator told NPR.