U.S. first lady Melania Trump and Vice President Mike Pence stand by U.S. President Donald Trump as he holds up FEMA map of damage assessment in Texas caused by Hurricane Harvey at the White House in Washington, U.S., September 1, 2017. REUTERS/Kevin Lamarque WASHINGTON, September 2 (Reuters) - U.S. President Donald Trump has asked Congress for an initial $7.85 billion for Hurricane Harvey recovery efforts, the White House budget director said on Friday, adding that failure to raise the budget ceiling may hinder disaster relief spending. In a letter to U.S. House of Representatives Speaker Paul Ryan, White House budget director Mick Mulvaney said the request included $7.4 billion for the Federal Emergency Management Agency's Disaster Relief Fund and $450 million for the Small Business Administration's disaster loan program. "This request is a down-payment on the president's commitment to help affected states recover from the storm, and future requests will address longer-term rebuilding needs," Mulvaney said. Trump had been expected to request $5.95 billion for the recovery effort after Harvey flooded areas of Houston and other parts of Texas.