What we know about the suspect now charged with trying to assassinate President Trump at a black-tie gala in Washington. Then, the White House rejects a proposal from Iran to reopen the Strait of Hormuz. Plus, warning signs for Republicans with the midterms nearly six months away. Rob D’Amico, Luke Broadwater, Susan Glasser, Michael McFaul, Doug Jones, Reed Galen, and Susanne Craig join The 11th Hour this Monday night.