Senator John McCain said on Wednesday he does not support the latest Senate resolution to authorize military force against Syria.

McCain threatened earlier this week to vote against a White House draft resolution unless President Barack Obama promised greater support to Syria’s rebels.

On Monday he seemed to have a change of heart when he expressed support for a strike in Syria after meeting Obama at the White House.

“If the Congress were to reject a resolution like this after the president of the United States has already committed to action, the consequences would be catastrophic,” McCain told reporters after meeting Obama.

Now, however, McCain opposes a resolution put together by Democratic Sen. Bob Menendez of New Jersey and Republican Sen. Bob Corker of Tennessee. The resolution, which was agreed upon Tuesday evening, sets a 60-day limit on military action in Syria, with a possibility for a single 30-day extension subject to conditions.

Asked if he supported the resolution, McCain told reporters, “In its current form, I do not.”

“There are a number of people who are unhappy,” he added.

A vote on the Senate Foreign Relations Committee’s draft was expected on Wednesday, but may now be postponed due to the opposition.