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Legislation giving Congress a chance to review and possibly reject any final nuclear deal with Iran is facing a test vote in the Senate on Thursday, The Associated Press reported.

The vote comes after months of wrangling over the legislation while the U.S. and five other nations engage in delicate negotiations with Tehran. Negotiators have been hurrying to reach final agreement by June 30 on a pact to curb Iran's nuclear program in exchange for relief from sanctions stalling the Iranian economy. The talks resume next week in Vienna.

The bipartisan legislation would block President Barack Obama from waiving congressional sanctions for at least 30 days while lawmakers weigh in on any final deal with Iran. It also would stipulate that if senators disapprove the deal, Obama would lose the current authority he holds to waive certain economic penalties Congress has imposed on Iran.

The bill stalled last week after Republican Sens. Tom Cotton and Marco Rubio proposed changes that drew the objections of Democrats as well as some Republicans who want the bill kept free of controversial provisions that could prompt the White House to withdraw its support.