Rep. Van Hollen: 'Burden' will be on GOP if healthcare law is overturned

"This was our proposal. We put this out there. The reality is major pieces of this are very popular with the American public. There's been a lot of disinformation with respect to other pieces that are going to come into play later on, but the burden will be on Republicans," said Van Hollen on MSNBC's "Jansing & Co."

When pressed on whether Democrats have a "plan B," to provide the maximum number of people with health insurance in the event the original proposal is found unconstitutional, Van Hollen said, "this was our plan."

"There was a big debate in this country … one alternative was to go with a Medicare-for-all type plan, a single payer plan. What was ultimately passed was based on the Republican model, the idea that we will ask everybody to share responsibility," he said.

Van Hollen, the top Democrat on the House Budget Committee, defended the mandate to have insurance, arguing that in order to ensure people aren't denied coverage because of preexisting conditions, you have find a way to "get everybody in the pool." 

The high court will rule Thursday on whether to uphold all or part of the Affordable Care Act, a decision that has far-reaching implications for the presidential election and beyond.  

The Maryland congressman said he is optimistic that the Supreme Court will uphold the law.

"Let's not get ahead of ourselves. This was the effort we put forward. We think it's a whole lot better than the status quo, where you saw very rapidly escalating healthcare costs and lots of people who were discriminated against by insurance companies, so let's wait and see what the court does," Van Hollen said.