Rep. Steve King (AP photo) Rep. Steve King (R-Tex.) opposes amnesty for undocumented immigrants.  (AP photo)

Rep. Steve King (R-Iowa) said Tuesday that the immigration reform bill proposed by the Senate's Gang of Eight is "far worse" than President Obama's health care bill.

"If somehow there was an offer that you’re going to get one or the other ... I would take Obamacare before I’d ever accept this amnesty plan," King said at a press conference with other conservative House Republicans opposed to the bill. "This is far worse."

King said the immigration bill is worse because it cannot be undone. "If this amnesty goes through, the genie will have escaped from the bottle," he said.

King suggested soon after the 2012 election that he might be open to an immigration reform plan, but Tuesday's press conference should serve notice that he and other House conservatives will rally opposition to the bill that was proposed. King was flanked by Republican House colleagues including Reps. John Fleming (La.) and Steve Stockman  and Louie Gohmert of Texas.

King said that if Republicans passed the immigration bill they would essentially be enfranchising millions of likely Democratic voters and preventing themselves from winning any more national elections.

Democrats "are in the process of seeking to establish another monolithic voting bloc," King said. "Somehow the Republicans who are for this completely ignore this fact."