He said there is "no other available alternative" to keep Iran from getting a nuclear weapon.
"It is clear that this is a bad deal," said Majority Leader Kevin McCarthy.
"We're not going to go there," the No. 2 Senate Republican said Tuesday.
"Patient diplomacy can achieve what isolation and hostility cannot," he said.
Cory Bennett 08/04/15 01:41 PM EDT
Sen. Richard Burr (R-N.C.) is sponsoring a cybersecurity information-sharing bill.
The 2016 contender will introduce legislation for public funding of elections.
Devin Henry 08/04/15 11:17 AM EDT
Senate Minority Leader Harry Reid (D-Nev.) defended President Obama’s new climate rule for power...
The Senate leader said he hopes for a "thorough, thoughtful and respectful debate."
"With cooperation, we can pass the bipartisan bill this week," the Republican leader said.
Senate Majority Leader Mitch McConnell set up a Wednesday vote.