Trump faces legal challenges over National Guard deployment in Los Angeles, but the president is threatening similar action in Chicago, New York and other cities.

"We do not need a deployment of the National Guard to our city. Instead, we hope to continue to work with the federal government to stop the flow of illegal guns..."

If President Trump deploys troops to other American cities, experts say it would be a clear departure from founding principles and invite a legal challenge.

Lawyers for President Donald Trump and California Gov. Gavin Newsom are set to face off Monday to determine whether the president violated a 147-year-old law when he deployed the National Guard to quell anti-immigration enforcement protests in Los Angeles – against the wishes of the governor.

President Donald Trump had previously said that he would "think about Memphis" for another Washington, D.C.-like deployment.

Sen. Tim Scott (R-S.C.) on Tuesday defended President Trump’s decision last month to deploy National Guard troops in Washington, DC, as part of a broader crackdown on crime. “I look at it as a strategy around safety,

US President Donald Trump said he plans to deploy federal troops to another US city, as he made a surprise visit to a Washington DC restaurant in a bid to argue his federal takeover of the city’s law enforcement is working.