The proposed strategy is to allow the subsidies, but remove the mandate. Obama would veto such a bill, and the GOP could then blame Obama for blocking the restoration of the subsidies.
My proposal would be to keep the mandate, but reduce the penalty to a tax of $2 per person. Obama would still probably veto such a bill, but he would look even stupider.
Remove the mandate and the healthy people tend to leave and the sick people remain. So in other words the Republican plan is to leave Obamacare in place but make sure it costs even more than it would have originally. The leadership in DC is positively dazzling. </sarcasm>