President Donald Trump is scheduled on Tuesday to address a joint session of Congress, as his second administration moves to recast the federal government, implement "America First" policies and redefine U.S. support for Ukraine.

President Donald Trump on Monday directed a "pause" to US assistance to Ukraine after a disastrous Oval Office meeting as Mr Trump seeks to pressure Ukrainian President Volodymyr Zelensky to engage in peace talks with Russia.

President Donald Trump is scheduled on Tuesday to address a joint session of Congress, as his second administration moves to recast the federal government, implement "America First" policies and redefine U.S. support for Ukraine.