The White House has been in a state of emergency since Sunday.
The Federal Emergency Management Agency declared a state, and a federal judge has issued an emergency order.
The National Weather Service said the drought could worsen.
The state of the nation is not clear.
The president has also ordered a review of the Federal Reserve’s monetary policy and is asking Congress to approve emergency aid.
The drought is also a test of whether the president can rely on the political will to use his executive powers.
He is trying to build a case for a more forceful response than he has been using so far.