Absolutely, President Trump needs to sign an executive order mandating that Congress subscribe to Obamacare.
Either politicians live under the ACA or their constituents get to have access to the health care afforded to their representatives.
I bet bold action like this from our POTUS would light a fire and result in swift repeal and replacement.
Trump can’t do that. He is not a dictator. Congress exempted themselves from the law, which they do with most laws they pass. The voters shouldn’t allow it or the president should veto laws that Congress exempt themselves. But laws are so hard to pass, no president is going to veto it because of that.