Trump spent $3.9 million in the first quarter. In addition to raising money for his own campaign, Trump has also collected funds for joint efforts with the Republican National Committee, which uses that money to help congressional candidates.
His re-election campaign finished 2017 with $22 million in cash.
Trump’s campaign has used millions of his campaign cash in the past year to pay legal fees - including some fees associated with responding to the Russia investigation being conducted by Special Counsel Robert Mueller. His campaign spent over $3 million in 2017 in legal fees.