Former national security adviser Michael Flynn sitting in the White House in February. The Senate Intelligence Committee announced it has subpoenaed two companies owned by Flynn. Carolyn Kaster/AP hide caption

Police and fans outside the Manchester Arena on Monday, following reports of an explosion after Ariana Grande had performed. Dave Thompson/Getty Images hide caption

Workers prepare to take down the statue of Robert E. Lee in New Orleans on Friday, the last of four Confederate-related monuments slated for removal. Gerald Herbert/AP hide caption

A protester demonstrates against the Venezuelan government outside the Organization of American States during a special meeting in April. The Trump administration has imposed economic sanctions on members of the country's Supreme Court. Jose Luis Magana/AP hide caption

U.S. Navy Rear Adm. Robert Gilbeau has been sentenced to 18 months in prison for lying to federal officials investigating a massive corruption scandal. AP hide caption

Emergency personnel work at the scene of a deadly Amtrak derailment in Philadelphia in 2015. The engineer has been charged with crimes including involuntary manslaughter. Patrick Semansky/AP hide caption

Former National Security Adviser Michael Flynn speaking at the White House in February. He's been subpoenaed by a Senate committee investigating possible Trump campaign dealings with Russia. Carolyn Kaster/AP hide caption

Soldiers transfer the remains of Army Sgt. Joshua Rodgers, 22, of Bloomington, Ill., at Dover Air Force Base, Del. Rodgers and Sgt. Cameron H. Thomas, 23, of Kettering, Ohio, were killed during a raid in Afghanistan. Cliff Owen/AP hide caption

Protester Moina Shaiq holds a sign at a rally outside City Hall in San Francisco. On Tuesday, a federal judge blocked a Trump administration order to withhold funding from sanctuary communities. Jeff Chiu/AP hide caption

Ann Coulter speaks during Politicon in Los Angeles in 2015. Frederick M. Brown/Getty Images hide caption

Serena Williams holds her trophy after defeating her sister Venus during the women's singles final at the Australian Open tennis championships in Melbourne, Australia in January. Dita Alangkara/AP hide caption

ICE agents conduct an enforcement operation in Los Angeles in February. Charles Reed/U.S. Immigration and Customs Enforcement via AP hide caption

Protesters gather outside the state Capitol building in Little Rock, Ark., on Friday to voice their opposition to the executions that were scheduled for the next two weeks. On Friday and Saturday, two judges blocked the executions from moving forward; the state is appealing. Kelly P. Kissel/AP hide caption