Rep. Peter King (R-N.Y.) said the Islamic State militant group is a "direct threat to the United States of America." (Drew Angerer/Getty Images)

Rep. Peter King (R- N.Y.) said Sunday on NBC's "Meet The Press" that the United States should do "whatever we have to do" to stop the Islamic State, the militant group formerly known as the Islamic State of Iraq and Syria, or ISIS.

"ISIS is a direct threat to the United States of America," King said. "They are more powerful now than al-Qaeda was on 9/11.... They have 10 times, 20 times the amount of money al-Qaeda had."

The Republican blamed the rise of the Islamic State on the United States withdrawing from Iraq and said the crisis is something the Obama administration should have been prepared for.

"The president, he started this downfall in 2011" with the withdrawal, King said. "We see this coming, and so for the president to say, 'We're doing airstrikes, we're not doing anything else' ... what kind of leadership is that?"

Sen. Dick Durbin (D-Ill.), who also appeared on the show, said escalation in Iraq is "not in the cards."

"Only Iraq can save Iraq," Durbin said.