Rep. Steve King (R-IA) responded to recent executive plans to expand immigrant rights by saying if President Barak Obama continues with these plans despite the disapproval of Congress, his impeachment would be on the table.

King addressed the President directly in an interview with Fox News Sunday, urging him not to undermine the judgment of Congress:

“I think Congress has to sit down and have a serious look at the rest of this Constitution, and that includes that i-word that we don’t want to say. And I only say that now because I want to encourage the president, ‘Please don’t put America into a constitutional crisis. Please don’t do that. There’s too much at stake in this country to be decided that you can take over the Constitution and write it at will.’”

The plans the President is considering would protect about five million of the estimated 11 million people who entered the country without visas or overstayed their visas, according to The Associated Press. Those who may be protected are parents of U.S. citizens or parents of children who have been protected from deportation under the Deferred Action for Childhood Arrivals program.

When pressed to clarify that impeachment should be considered if the President decided to overrule Congress, King added, “Where would we draw the line otherwise? If that’s not enough to bring that about then I don’t know what would be.”

Last week John Boehner (R-Ohio) said the House had no plans to impeach Obama, calling the accusations a “scam” the Democrats are using to rally Democrats to vote in the upcoming election.

The House has approved a resolution approving a lawsuit against the President, but Congress has made no action so far toward impeaching him.

When Fox News Sunday host Chris Wallace played a clip of the President jocularly asking Republicans to “stop being mad all the time,” King’s response was, “Most of us personally like the President; it’s not about mad, it’s not about hate, it is about the Constitution.”