(VOVworld) - US President Barack Obama has continued to call on members of Congress to support Iran nuclear deal.

President Barack Obama speaks about the nuclear deal with Iran at American University in Washington, Aug. 5, 2015. (Photo: AP)

In an August 19 letter addressed to Representative Jerrold Nadler, a New York Democrat, President Obama said the U.S. could still take military action or reinstate sanctions against Tehran if it violates terms of the agreement. The letter also says the U.S. is prepared to increase missile defense funding for Israel, which has strongly opposed the nuclear agreement between Iran and world powers. Democrat Nadler on Friday endorsed the nuclear deal. Obama's letter was sent on the same week that a second prominent Senate Democrat, Robert Menendez of New Jersey, said he would oppose the nuclear deal when it comes up for a vote in Congress next month.