U.S. Senator Ron Johnson of Wisconsin joined us on the show last week to discuss the pending Iran deal, his opponent's support for a $15 minimum wage, Hillary Clinton's handling of classified information, and other topics facing lawmakers in Washington.

On the Iran deal, Sen. Johnson told us he attempted to have the agreement deemed a treaty, which would have given the Senate a better chance to intervene. As it stands, Johnson told us he's "not optimistic" that the deal can be stopped.

Here's our full talk with U.S. Senator Ron Johnson of Wisconsin: