US President Donald Trump has informed American troops that he is prepared to send 'more than the National Guard' into cities across the United States if necessary.

This statement underscores his escalating confrontation with Democratic-led local governments which oppose these troop deployments, marking a significant expansion of military engagement in domestic affairs.

Trump made this announcement on Tuesday while addressing troops aboard the George Washington aircraft carrier, docked at the Yokosuka naval base near Tokyo.

His speech, which touched upon several partisan issues, was frequently met with applause and cheers from the audience.

The President has been deploying National Guard troops to various Democratic-led jurisdictions since June in what can be considered an unprecedented use of the military for domestic purposes.

Los Angeles, Memphis, and Washington, D.C. have all seen the presence of these troops, with legal battles being fought over their deployment in Portland and Chicago.

In a move that was even more extraordinary, Trump deployed active duty Marines to Los Angeles to protect federal agents and property; however, they have since been withdrawn.

The President has left open the possibility of invoking the Insurrection Act, allowing for the deployment of active duty troops with the power to directly police and arrest individuals.

While National Guard members are generally prohibited from conducting civilian law enforcement under federal law, the Insurrection Act provides an exception in times of insurrection or rebellion.

Since his second term began in January, Trump has shown a willingness to expand executive powers at the expense of legal and political boundaries.

In a previous speech to military commanders, Trump suggested using American cities as 'training grounds' for the armed forces, raising concerns among Democrats and civil liberties organizations.