ABC News’ Martha Raddatz interviews Sen. Chris Van Hollen on “This Week" over President Trump deploying the National Guard to Washington, D.C.

The Republican governors of West Virginia, South Carolina and Ohio announced Saturday they will send National Guard troops to Washington, DC, in an escalation of President Donald Trump’s efforts to federally take over law enforcement in the city.

West Virginia, Ohio, and South Carolina — are set to deploy hundreds of National Guard troops to Washington. And, in a reversal of their previous stance, Defense officials now say many of those troops will be armed.

President Donald Trump deployed 800 National Guard troops to the nation's capital as part of a crime crackdown in the city.

National Guard troops have begun 24-hour operations around Washington, D.C., as of Thursday morning, according to a Department of Defense official. It's part of President Donald Trump's plan to address crime in Washington by taking over the city's police department and deploying the National Guard troops.

Trump fulfills campaign promise by federalizing D.C. with 30-day emergency control, cracking down on crime in the nation's capital.

Around two dozen soldiers stood guard outside Washington, Union Station in Washington, D.C., on Aug. 14. They had little to do.

The Trump administration on Friday reversed course and agreed to leave the Washington, D.C., police chief in control of the department, while Attorney General Pam Bondi, in a new memo, directed the District’s police to cooperate with federal immigration enforcement regardless of any city law.