As the Trump administration pushes ahead with a proposal to get rid of the Legal Services Corporation — a federal agency that provides millions of dollars in grants each year for legal aid for low-income Americans — the White House faces opposition not only from Democrats, but from Republicans and corporate America as well.

The president’s proposed budget released by the White House on Tuesday calls for a complete defunding of the Legal Services Corporation. The agency, which received $385 million this year from Congress, gives grants to 133 legal aid organizations across the country. Trump’s 2018 budget would provide $33 million to wind down its operations.

The fate of the agency’s budget ultimately lies with Congress, though, and several Republicans in the House and Senate have already joined Democrats in opposing the cut. In a May 18 letter obtained by BuzzFeed News, Senate Majority Whip John Cornyn — the second ranking Republican in the Senate — and two other Senate Republicans joined Democrats in urging the Senate Committee on Appropriations to provide “robust funding” for the agency.

“Recent research shows that civil legal aid is a good investment of taxpayer dollars, as it reduces clients’ reliance on other types of governmental aid and enhances their ability to participate in the marketplaces,” the letter says.

Cornyn was not immediately available for comment on Tuesday. The other Republicans who signed the letter were Alaska Sen. Daniel Sullivan and South Dakota Sen. Mike Rounds.

Cornyn on Tuesday released a statement praising Trump’s focus on military spending in the White House's 2018 budget proposal, but a day earlier had tweeted a gentle reminder that it is Congress, not the president, that controls the budget.