National Rifle Association President David Keene tells Newsmax that President Obama could be violating the Constitution if he circumvents Congress and imposes gun control by executive order — and his presidency will be “at risk” if he proceeds.

Keene also says gun control advocates will ultimately fail in their efforts to ban assault weapons, despite Obama’s “rabid advisers” who will push the ban.

And he asserts that the administration is asking the “wrong questions” in the wake of the Newtown, Conn., shootings and is instead seeking to politicize the tragedy.

Keene assumed the presidency of the NRA and its 4-million-plus members in May 2011. Previously he served as chairman of the American Conservative Union from 1984 to 1991.

In an exclusive interview with Newsmax TV on Tuesday, Keene reacts to the president’s warning on Monday that he would take “executive action” to impose gun control.

“Our concern is the same that most Americans should have whenever a president tries to circumvent Congress, because what the president is really saying is ‘I’m going to do these things myself, and I’m not going to submit them to the representatives of the people.’

“We don’t know what he’s going to try to do by executive order. There are obviously some things he can’t do and there are some things he shouldn’t be doing, but in order to implement these various changes he’s going to have to go to Congress to get the money to fund it. So there are going to be votes on these things, there is going to be a debate in Congress, and our members and other gun owners, and believers of the Second Amendment, are going to have the right to be heard.”