Landmark Legal Foundation President Mark Levin

) -- Landmark Legal Foundation (

) president and radio talk show host Mark Levin says he welcomes George Washington University Law Professor Jonathan Turley’s recent acknowledgement that the concentration of presidential power under President Obama poses a “severe” danger to the nation.

“I thought I was hearing an echo. I’ve been complaining about the Obama imperial presidency for several years now,” Levin told CNSNews.com. “It’s nice to have a liberal law professor testify before Congress that we have a president who is out of control.

"In fact, I’ve gone further and said that we have entered a post-constitutional period…A lot of professors at law schools are encouraging this lawlessness, so I’m glad that Jonathan Turley and some [other] liberal professors are finally speaking out.”

During a House Judiciary Committee hearing on “Presidential Powers and the Constitution” held Tuesday on Capitol Hill, Chairman Bob Goodlatte (R-Va.) asked Turley: “How does President Obama’s unilateral modification of acts of Congress affect both the balance of power between the political branches and the liberty interests of the American people?”

“The danger is quite severe,” replied Turley, who previously called the separation of powers “the bedrock of our Constitution.”

“The problem with what the president is doing is that he's not simply posing a danger to the constitutional system. He's becoming the very danger the Constitution was designed to avoid, that is the concentration of power in any single branch. This Newtonian orbit that the three branches exist in is a delicate one, but it is designed to prevent this type of concentration.”

Levin also pointed out that by not trying to block Obama’s overreach, congressional Democrats are “actually working to undermine the power of their own institution.”

“The problem is that Senator Harry Reid and the Democrats are participating in the unconstitutional empowerment of the executive branch because they seek to advance their hard-Left agenda even at the cost of Congress’ future authority and the diminution of the Constitution,” Levin told CNSNews.com, warning that they are doing “enormous danger to the nation and it could be permanent.”

Cato Institute Chairman Robert Levy said that he is also "very concerned" about Obama's "power grab."

"My concerns are pretty broad," Levy told CNSNews.com, ranging from the "exercise of legislative power by administrative agencies" to the "excessive use of executive orders," the "select enforcement of federal laws," and what he called "quite clearly violations of the Fourth Amendment" by the National Security Agency's (NSA) surveillance program.

However, Levy added that in some areas, particularly Obama's abuse of his war powers and allowing federal agencies to become "lawmaking bodies outside of Congress," Obama is "no more guilty than other presidents."

"It will come down to what the Supreme Court and Congress lets him get away with," he said.