New York: US President Donald Trump has called for an end to the politics of "revenge, resistance and retribution" in his second State of the Union address, warning Democrats they could damage the US economy if they launch too many investigations into his administration.

Trump book-ended his speech, which was delayed by a week because of a 35-day federal government shutdown, with pleas for unity and requests for politicians of both parties to work together to solve the nation's most pressing problems.

But he soon moved on to some of the issues that most divide Americans – immigration and abortion – in a speech that drew chants of "USA" from Republicans and audible jeers from Democrats.

US President Donald Trump delivered his second State of the Union address in Washington on Tuesday local time. Credit:The New York Times

Trump also confirmed he would meet later this month in Vietnam with North Korean leader Kim Jong-un for a second summit on ending the country's nuclear weapons program.