A new study says only one in three Americans approves of how President Barack Obama dealt with the agreement on Iran's nuclear program. The Gallup research organization did the study.

The pollster questioned more than 1,000 people in recent days. It said Thursday that 55 percent disapproved of Mr. Obama's Iran policy and 33 percent approved of it.

The finding is similar to a study by Quinnipiac University. It said twice as many Americans oppose the international agreement with Iran as support it. The U.S. Congress plans to vote next month on whether to approve or reject the deal. Gallup said that Mr. Obama's overall approval rating is at 47 percent.