President Barack Obama will address the nation about Syria Tuesday night.
Syria's foreign minister said Tuesday that the country would take steps to avoid U.S. military strikes by declaring its chemical weapons and would agree to put its chemical weapons under international control.
The White House says any deal has to be binding and go through the United Nations.
The Senate is set to vote on U.S. action Wednesday.
Sen. Bernie Sanders spoke out Tuesday afternoon, saying concerns about military involvement go beyond the human and financial costs of another war.
"It is a deep sense that exists across the political spectrum that foreign policy and going to war is a lot more complicated and unpredictable and has unintended consequences-- far more so than many of leaders in past years have believed," said Sanders, I-Vermont.
Sen. Patrick Leahy, D-Vermont, issued a statement saying he likes the idea of the U.N. helping to broker a deal, but he wants to see "verifiable action by the Syrian regime to relinquish control of its chemical weapons."
The president's address to the nation is Tuesday at 9 p.m. CBS News will carry it live. You can see it on Channel 3.