Republicans in Congress want to make it substantially more expensive for immigrants to seek refuge in America.

A new proposal would hike the price of legal immigration to pay for President Donald Trump‘s sprawling enforcement agenda.

The House Republicans’ plan would slap a $1,000 price tag on requests for asylum, require $500 payments for work authorization every six months and charge immigrants hundreds of dollars if they appeal court decisions, among other fees.

House Judiciary Chairman Rep. Jim Jordan, R-Ohio, in a committee hearing April 30 said the new fees could raise $77 billion, allowing Congress to make “necessary investments in immigration enforcement in a fiscally responsible manner.”

Advocates say the proposal is punitive and unrealistic.

The “crushing new fees” will “block access to legal forms of immigration for many different categories of individuals,” said Greg Chen, senior director of government relations with the American Immigration Lawyers Association, a trade group.