President Donald Trump is promising to announce new steps to tackle homelessness and crime in Washington just days after directing federal law enforcement agencies to increase their presence in Washington and suggesting the federal government could seize control of the city.

Trump says homeless people must go "far" from the nation's capital, as part of his anti-crime plan, but the mayor pushes back.

While details of the plan were unclear, the administration is preparing to deploy hundreds of National Guard troops to Washington, a U.S. official told Reuters.