US President Donald Trump will focus on key issues like immigration, national security and trade and call for unity in a hugely divided Congress in his annual State of the Union address on Tuesday as he begins the second half of his first term in the White House.

Contrary to his aggressive tweets and his frequent lashing out against the opposition Democratic leadership, Trump intends to portray a picture of national unity in resolving the challenges being faced by the country, officials familiar with preparations for the State of the Union Address said on Monday.