About 100,000 homes have been affected by Storm Harvey and the flooding it brought to parts of the southern US, a White House aide has said.
Homeland Security adviser Tom Bossert said the White House would ask Congress for emergency funding to help those affected, some of whom are uninsured.
Meanwhile US President Donald Trump is said to have pledged $1m (£770,000) of his own money to the relief effort.
At least 33 people have died since the storm hit Texas last Saturday.
Firefighters have begun a door-to-door search for survivors and bodies in an operation that could take up to two weeks.
Source: BBC
