A House Republican on Sunday said the lower chamber would have to consider impeaching President Obama if he proceeds with plans to expand the deferral of deportations for millions of illegal immigrants.

“If the president has decided that he’s not going to enforce any immigration law … 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,” Rep. Steve King, R-Iowa, said on “Fox News Sunday.”