Republicans believe they will win the public relations battle on the deal, which largely unites the GOP and threatens to divide the Democratic Party.

Some Senate Republicans are thinking about moving a motion of approval of the deal, believing it would put Democrats in a tough spot ahead of next year’s elections. Such a move in the upper chamber could lead to less than half of the Senate backing the president, allowing for more favorable headlines for the GOP. The House, however, is more likely to pass a resolution of disapproval.

A third option is to move legislation sponsored by Menendez and Sen. Mark Kirk (R-Ill.) placing new sanctions on Iran, which the Banking Committee passed earlier this year and has Democratic support.

“All options are on the table,” said a Republican member of the Senate Foreign Relations panel who requested anonymity. “I wouldn’t take anything off.”