GOP lawmakers split on US military intervention to fulfill Trump's calls for regime change in Iran

Republicans are split on whether President Donald Trump should use military force in Iran to bring about the regime change he has called for.

While some Republicans would trust Trump to pull the trigger and stand ready to back him, others urged the administration to use force as a last resort.

Across the board, lawmakers said change is coming to Iran one way or the other. Rep. Mark Messmer, R-Ind., believes that with American economic and diplomatic pressure, it’s only a matter of time.