"That's why we're fighting so hard for this. And congratulations!" Obama tweeted with a link to Kimmel's Monday night opening monologue.
The comedian said his son, William, was born with a heart disease that required surgery last Monday, three days after he was born.
"He went in with a scalpel and did some kind of magic that I couldn't even begin to explain", Kimmel said.
His son was transferred to another hospital where surgeons spent three hours operating on him. "If your baby is going to die, and it doesn't have to, it should not matter how much money you make", said a teary Kimmel. "But I think most importantly, and I think at the end of Jimmy Kimmel's monologue, he said that... we need to have some of these things that aren't Republican or Democrat, that are American policies, and I think that's what the president's fighting for right now", he continued. "My wife and I assumed it would be nothing - our daughter [2-year-old Jane] had a heart murmur too - and we didn't notice that he wasn't the colour he was supposed to be'".
"Today there are safeguards in place", he said, adding that health care coverage can prevent parents from having to "make decisions that are hard and uncomfortable" about what they can afford when it comes to treating their children".
After thanking family, friends and hospital staff for the support of the family and his son's treatment, Kimmel criticized U.S. President Donald Trump's proposed $6-billion cut in funding to the National Institutes of Health.
Syrian opposition HNC group criticizes de-escalation deal
Speaking on the same, Russian President Vladimir Putin stated that the issue would have to be taken up in separate talks. The plan, though vague on specifics, for the first time envisages armed foreign monitors on the ground in Syria.