A House Republican says he is “compelled” to write legislation that would give President Obama explicit authority to use military force against growing Islamic terrorist groups in the Middle East.

Rep. Frank Wolf, R-Va., said he’ll introduce his bill next week, when Congress returns from the summer recess.

The legislation would allow Obama to use military force against the Islamic State of Iraq and Syria terrorists and al Qaeda and would encourage “close coordination” with NATO and allies on taking any action.

Wolf said a bill is needed to “help end any ambiguity” about Obama’s authority to act and whether Congress supports military action against a rapidly expanding ISIS.

Obama has so far delayed making a decision on how to tackle the growing threat of the ISIS. The president has authorized targeted military strikes against the group in Iraq and has given the green light to drone surveillance of ISIS targets in Syria.

So far, there has been limited protest from Congress over whether Obama has the authority for the Iraq strikes and Syria surveillance because many lawmakers believe Congress granted presidential authorization to use military force against terrorists shortly after the Sept. 11, 2001, terrorist attacks.

Wolf and others believe authorization beyond the War Powers Resolution is needed for any new action, however.

“We cannot continue operating on outdated authorities passed 13 years ago,” Wolf said. “It is time for this Congress to vote.”

Wolf said he will introduce companion legislation restructuring the war powers act so that congressional approval is required for all future military action.

Wolf’s announcement comes a day after Sen. Bill Nelson, D-Fla., said Monday night he would file a measure in the Democratic-led Senate giving Obama “clear authority” to order the bombing when Congress returns next week.

On Tuesday, ISIS released a video showing the second beheading of an American journalist.

There is no word yet from House Speaker John Boehner, R-Ohio, or Senate Majority Leader Harry Reid, D-Nev., as to whether either will take up the respective measures.

Wolf is a member of the appropriations subcommittee for state and foreign operations. He’s also a longtime advocate for persecuted religious minorities and has frequently condemned the mass killings of Christians by ISIS, which he has labeled a genocide.