It was a promise made over and over again on the campaign trail: “I’m going to ask Congress to send me a bill to immediately repeal and replace disastrous Obamacare."

Easier said than done.

Now, Republicans all over the country are facing heat at town halls over their proposed repeal of President Obama's health care law, the Affordable Care Act.

Joining Boston Public Radio to explain why the President has been having a hard time repealing and replacing — or repairing—Obamacare is Jonathon Gruber. He may actually be somewhat responsible for making Obamacare hard to dismantle, because he was instrumental in creating it. Jonathan Gruber is a professor of economics at MIT.

Listen to the clip above to hear Gruber's take on the repealing of Obamacare.