US President Donald Trump announced plans Monday for a major "rally" in Washington on the July 4 Independence Day, further imposing his political brand on celebrations of America's 250th anniversary.

Cage fights on the White House lawn will be the star attraction at ‘threadbare’ semiquincentennial

The celebrations to mark the US's 250th anniversary have been overshadowed by questions about Trump's influence.

Trump has blunted criticism regarding his age by staying in the public spotlight and projecting an image of strength and vitality.