A White House aide said Thursday roughly 100,000 homes have been affected by Hurricane Harvey and the flooding that hit parts of southeastern Texas.

"That's a big number," Tom Bossert, a U.S. homeland security adviser, said during Thursday's White House press briefing. "We're going to have 100,000 affected homed with different degrees of insurance — some flood insurance, some underinsured, some uninsured. We'll have to address those as we move forward."

Thousands have been displaced after parts of southeastern Texas experienced record rainfall, causing catastrophic flooding in the area, after Hurricane Harvey made landfall Friday.

Bossert said he expects homes to have experienced different levels of flooding, with some houses having two feet of water or less inside, and others having eight feet of water or more.

Local and state officials have begun calling on Congress to pass an aid package to assist those affected by the storm, and President Trump said during a visit to Texas on Tuesday he expects Congress to act quickly.

Bossert said the White House will make a supplemental request to Congress "shortly" based on information the Trump administration currently has. Once administration officials receive additional information in the future, Bossert said the White House will make a second supplemental request.

Thousands are expected to seek temporary housing in the wake of the flooding, raising concerns of landlords deliberately raising rent prices. But Bossert reassured those moving into temporary housing situations that anyone who price gouges flood victims can expect to hear from law enforcement.

"Gouging will not be tolerated," he said. "[Attorney General] Jeff Sessions and the president of the United States will not tolerate gouging. Anybody who is going to go out and take advantage of a storm victim out to expect law enforcement to come down on them with a hammer. That's not acceptable on a regular day. It's certainly not acceptable when people are suffering."

In response to the flooding in Houston, federal and state officials from across the country have flocked to southeastern Texas to assist in rescue and recovery efforts, as have good Samaritans from looking to volunteer.

The president has also heard from the leaders of Mexico and Canada, who have called to express their "condolences, their prayers and thoughts," as well as assistance, Bossert said.

"We very much appreciate that, and the president was deeply touched by their phone calls," he said. "We appreciate the neighborly gesture, and it's an international expression of what we're seeing here at a very local level. We've got neighbor helping neighbor in Texas and Louisiana, but also neighbors that aren't in close proximity internationally expressing help."