“No foreign policy choice comes with guarantees,” Sen. Jeff Merkley said.
The letter has been signed by more than 1,000 American rabbis, its author said.
The event underscores the strengthening ties between the two Republicans.
She is the 29th Senate Democrat to back the agreement.
"The same people that rushed us into war in Iraq want to sink the new agreement," it says.
“The Obama administration has a lot of explaining to do," the Speaker said.
A new report confirms lawmakers' fears about the contested secret "side deals."
Jack Reed and Sheldon Whitehouse give the White House 23 votes out of the 34 needed.
“This agreement is the best option to halt Iran’s nuclear weapon program," said Sen. Mazie Hirono.
The Dems told colleagues to look up U.S. intelligence assessments for themselves.
"It's not a conclusion I came to lightly," he says.
Kerry told a reporter he wouldn't discuss Plan B.
The CBC has proven to be a crucial coalition for advancing President Obama's priorities.
The retired CIA director and general "continue[s] to grapple" with the nuclear bargain.
The results could be troubling for supporters of the agreement.
Rep. Mike Pompeo's comments come with support among Democrats on the rise.
J.B. Pritzker is also the brother of Commerce Secretary Penny Pritzker.
Sen. Cornyn's comments follow new revelations about alleged secret side deals.
An organization opposed to the deal is using Snapchat to target Sen. Ben Cardin (D-Md.).
“I hope we can defeat it, but the procedure is obviously stacked in the president's favor."
"The concessions to Iran and Cuba both endanger our nation," he says.
The deal will "give us more freedom of action" to address other aspects of Iran's behavior, he said.
The nuclear deal with Iran could lead the country to export an additional 600,000 barrels of oil...
"I still believe that the president will have enough votes to sustain a veto," he said.