The Senate starts at 10 a.m. and will have to quickly decide whether to work on a three-month extension of emergency unemployment benefits or a yearlong extension.

Late Wednesday, Senate Majority Leader Harry ReidHarry ReidSanders and Schumer are right: Ellison for DNC chair The Hill's 12:30 Report Hopes rise for law to expand access to experimental drugs MORE (D-Nev.) announced a procedural vote on the three-month bill would be delayed while senators discuss the possibility of a yearlong bill.

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Reid said he opposes paying for an extension but said if a pay-for is necessary, Democrats would insist on a longer extension.

Ongoing negotiations could alter the Senate schedule, but if no deal is in sight, Senate Democrats could decide to hold a vote on adopting a motion to proceed to the three-month bill. That bill, S. 1845, was offered by Sens. Jack ReedJack ReedA guide to the committees: Senate Cruz: Supreme Court 'likely' to uphold Trump order Schumer: Trump should see 'handwriting on the wall,' drop order MORE (D-R.I.) and Dean HellerDean HellerCornyn: Border wall 'makes absolutely no sense' in some areas Greens launch ads against two GOP senators for Pruitt votes GOP groups ramp up pressure on lawmakers over ObamaCare MORE (R-Nev.).

The House also starts at 10 a.m., and in the afternoon, it will start work on legislation that would curb the authority of the Environmental Protection Agency.

The Reducing Excessive Deadline Obligations Act, H.R. 2279, combines three bills into one. In its latest form, it would ease rules requiring EPA review of solid waste regulations, prohibit the EPA from imposing duplicative solid waste rules on states and require federal facilities to comply with state-level environmental rules.

On Wednesday, the Obama administration threatened to veto the bill if approved by the House and Senate.

The House will start by debating and voting on a rule for the EPA bill. Then, it will debate the bill, consider two amendments and pass it.

The same rule that covers the EPA bill also covers two ObamaCare bills that will come up on Friday. Those bills would require weekly updates on the implementation of the healthcare law and require officials to tell people, if their personal health data has been compromised.