Lawmakers Warn Obama US is Next on ISIS's List

U.S. airstrikes in Iraq are helping to weaken the jihadist army known as Islamic State, or ISIS.
         
This weekend, the U.S. military assisted in a humanitarian operation to free the town of Amirli from a six-week siege.
    
American, British, French and Australian aircraft also dropped food and water to help the thousands of people living in Amirli.
    
But lawmakers say it's time to expand on those airstrikes and confront the Islamic radicals who continue to wreak havoc in Iraq.

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"We now are facing the largest, most powerful, wealthiest terrorist organization in history, and it is going to require some very strong measures to defeat them," Sen. John McCain, R-Ariz., said.

Democratic Sen. Dianne Feinstein agreed.

"This is a vicious, vicious movement and it has to be confronted," the California lawmaker said.
    
Many believe ISIS is a direct threat to the West.
    
Three days after Great Britain increased its terrorist threat level from "substantial" to "severe," lawmakers in Washington are warning against underestimating the potential threat to the United States.
    
According to U.S. intelligence, more than 100 Americans have joined the ranks of ISIS. The concern is they'll use their passports to get back into the country.

"Al Qaeda didn't need a grievance to attack us on 9/11," said Rep. Peter King, R-N.Y., who sits on the House Homeland Security and Intelligence Committee.

"These groups, they don't need any excuse," he continued. "They will attack us whenever they can. I believe strongly that ISIS does plan on attacking the United States."