The Senate will take up legislation to allow Congress to review a nuclear deal with Iran on Thursday.
Sen. Ben CardinBenjamin (Ben) Louis CardinBipartisan group of senators call on Trump to sanction Russia over Navalny poisoning Pelosi hopeful COVID-19 relief talks resume 'soon' Congress must finish work on popular conservation bill before time runs out MORE (D-Md.) and Minority Leader Harry ReidHarry Mason ReidThe Hill's Morning Report - Sponsored by Facebook - Justice Barrett joins court; one week until Election Day GOP Senate confirms Trump Supreme Court pick to succeed Ginsburg Democratic Senate emerges as possible hurdle for progressives  MORE (D-Nev.) suggested that Republicans want to offer amendments to the agreement reached by Cardin and Sen. Bob CorkerRobert (Bob) Phillips CorkerCornyn: Relationships with Trump like 'women who get married and think they're going to change their spouse' Trump excoriates Sasse over leaked audio Has Congress captured Russia policy? MORE (R-Tenn.), chairman of the Foreign Relations Committee. 
"I've heard that some senators want to offer amendments to really hurt this bill," the Nevada Democrat said. "I hope that is in fact not the case." 
McConnell said earlier on Thursday that he expects a "vigorous debate" next week on the legislation. 
"This bill will be open for amendment, and those who seek to improve it will have an opportunity to do this," he said. "We look forward to a vigorous debate on it next week." 
Reid suggested that work on the legislation could dominate the Senate schedule next week, saying that the "bill will take some time." 
The Foreign Relations Committee passed the legislation unanimously last week, after Corker and Cardin reached an agreement hours before a scheduled markup of the legislation.
Conservative Republicans have voiced some skepticism of the bill, citing worries it does not give enough of a role to Congress. 
The bill would allow Congress to vote to approve or disapprove of the nuclear deal the U.S is trying to reach with Iran and members of the United Nations on Iran's capabilities. Negotiators are trying to reach an agreement by a June 30 deadline.