During a heated Senate Intelligence Committee hearing on Tuesday, Sen. Mark Warner described the actions of the nation's top intelligence officials as "sloppy, careless, incompetent behavior.

Among the topics that have come up: her stance on an electronic surveillance program, her push to drop charges against Edward Snowden and her 2017 meeting with Syrian President Bashar al-Assad.

The former Democratic congresswoman has shifted her political allegiance in recent years, going from a candidate for the Democratic presidential nomination in 2020 to a stalwart Trump supporter.

In her announcement to leave the Democratic Party, Gabbard accused the party of using rhetoric that is anti-police and anti-religion, and pushing the country closer to nuclear war.