The White House is working to build support for a deal with Iran.
President Barack Obama wrote in a letter to U.S. Rep. Jerrold Nadler (D-New York) that the United States could take military action or reassert sanctions if Iran fails to comply with the nuclear agreement.
"All of the options available to the United States –- including the military option -– will remain available through the life of the deal and beyond," he wrote in a letter, made public Thursday by the White House.
Nadler has since announced his support for the deal.
Find out more with this video from Wochit News.