Top Republicans are passing around an extensive menu of ideas to cover the cost of a massive tax cut and immigration crackdown bill. They could create a 10% tariff on all imports, bringing in an estimated $1.9 trillion. They could establish new work requirements for Medicaid recipients, bringing in $100 billion in savings.

They have even calculated that they could generate $20 billion by raising taxes on people who can use a free gym at the office, according to a 50-page list of options that the House Budget Committee has circulated in recent days.

The bigger challenge for Republican leaders is trying to figure out what can pass Congress and be signed by President Donald Trump. With slim majorities in both chambers, they are searching for the right mix of policy changes that could offset some of the costs of Trump’s most expensive proposals, placating spending hard-liners who are concerned about ballooning the government’s debt, while also maintaining the support of more centrist members who are loath to slash popular programs.

House Republicans huddled in the Capitol on Wednesday to discuss a mix of options.

Many of the GOP’s anti-spending members have said they cannot support a bill that adds significantly to the nation’s debt. But most of the major policies Trump wants included in the legislation are extremely expensive. Extending the tax cuts he signed into law in 2017 alone is expected to cost $5 trillion.

That has left Republicans casting about for ways to offset those costs. The budget panel’s menu of possibilities includes everything from major clawbacks of current policy to lower-hanging fruit. Among many others, there are proposals to repeal major health care subsidy programs established by the Affordable Care Act, put caps on Medicaid funding, and end a policy that makes employer-provided meals and lodging tax-exempt.

Here’s a look at what Republicans are considering.

Medicaid

Republicans have long sought to scale back Medicare and Medicaid, the government programs for the elderly and poor, and the budget panel’s list outlined a slew of options for doing so, including reducing federal Medicaid payment rates and establishing work requirements for the program’s recipients.

One option floated by the committee would try to undercut the Affordable Care Act’s Medicaid expansion, which led to a ballooning in program enrollment. It would reduce the share of Medicaid costs the federal government pays for, increasing the burden on states.

Another on the list would impose work requirements for Medicaid recipients on able-bodied adults without dependents, with exemptions for pregnant women, students and primary caregivers of dependents. Work requirements would cause 600,000 people to lose coverage, according to estimates from the Congressional Budget Office, cutting federal spending by at least $100 billion over the next decade.

House Budget Committee aides estimated that they could recoup as much as $800 billion with a rollback of clean energy efforts, including repealing tax credits created in the Inflation Reduction Act, former President Joe Biden’s landmark bill meant to reduce health costs, reduce greenhouse gas emissions and raise taxes on corporations. The rollback would also include nixing a climate regulation, put in place by the Biden administration, that is designed to ensure that the majority of new passenger cars and light trucks sold in the United States are all-electric or hybrids by 2032.

Nickel and dime

Republicans are also considering a raft of proposals that would amount to small changes to the nation’s fiscal balance but could impose new costs on Americans. Among them are new taxes on free gyms at offices, as well as employer-provided meals and lodging.

The budget panel document also proposed taxing all scholarship and fellowship income, which is currently exempt from taxes, which would produce an additional estimated $54 billion in federal revenue.

Lucrative but popular targets

House Republicans’ list includes options that could generate trillions of dollars in savings. But those are likely to face near-insurmountable opposition from lobbyists and some lawmakers in their own ranks.

The proposals include ending the tax deduction for interest on home mortgages, one of the most prized sections of the tax code. While Republicans limited the deduction in their 2017 tax law, ending it entirely could save an additional $1 trillion over 10 years, according to the budget panel document. Real estate agents and lawmakers from suburban districts with many homeowners would most likely balk at such a measure.

Taxing imports into the United States, a step Trump has frequently urged, could also be lucrative. The document lists a 10% tariff on all goods as one option worth nearly $2 trillion, though many Republicans have said they do not believe Trump’s tariffs should be passed into law.

A proposal to tax imports but exempt exports, called a border adjustment plan, could raise $1.2 trillion, according to House Republicans’ document. Many economists like the idea of taxing goods based on where they are sold, rather than where they are produced, but a previous Republican effort to pass a destination-based plan failed in 2017 after companies pushed back on it.

The House Republican menu includes several other tax increases, including denying corporations the ability to deduct state and local taxes. Business groups are already organizing against those prospects.