Farmers will be among those whose interests may be affected by the sweeping farm bill that Congress is expected to pass on Thursday.
The legislation could give the government the authority to purchase land, which would give the Department of Agriculture power to make the purchase.
That could make it easier for the government to buy land for its own use and potentially make it harder for farmers to sue the government for damages.
A key component of the bill is a provision that allows farmers to negotiate directly with the federal government over compensation for crop loss, which is often more difficult than the court-ordered compensation that is generally required under federal law.
Farmers say that would put them at a disadvantage if the government does not want them to buy.
The House is expected in the coming weeks to vote on a proposal that would require farmers to pay $20,000 a year for the right to negotiate for a larger share of the crop.
Farmers have been fighting the legislation since it was introduced.
Farmers in states where farmers have traditionally benefited from federal agricultural assistance programs have been organizing to stop it.
This story was updated on June 25, 2018 to include comment from the USDA.