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House Foreign Relations Committee Chairman Michael McCaul (R-Texas) said there must be consequences after a reported chemical attack killed dozens in Syria.

The attack reportedly took place on a hospital in the town of Douma amid a resumed offensive by Syrian government forces.

President Trump said on Sunday there would be a “big price to pay,” calling out Russian President Vladimir Putin and Iran for backing Syrian President Bashar Assad, whose forces are believed to have carried out the attack.

Rep. McCaul said Trump is absolutely right that there must be consequences, unlike when former President Barack Obama vowed in 2012 that such actions would cross a “red line," but later failed to enforce the promise when hundreds of Syrians were killed by sarin gas.

"This cannot stand in the civilized world. And this needs to be responded to in a very firm, strong way. And I think we need to deal also with Russia and Iran's involvement in this. I think they are complicit," McCaul said. "I think they're all in bed together, the Russians, the Iranians and Mr. Assad, behind this horrific attack. It has their fingerprints all over it."

He noted that a nerve agent was also used in the mysterious poisoning of an ex-Russian spy on the streets of an English cathedral city last month.

"These nerve agents can be floating all around the world. I certainly don't want to see that in the United States, in the homeland," McCaul said.

The Assad regime and Russia have denied any involvement in the alleged attack.

Watch more above.

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