The MSNBC host said: "So what are those Republican senators going to say about that now?"
The analysis showed Rubio is 4.6 percent Native American.
Florida senator opposes declaring a national emergency.
I had a chance to witness the human stories behind this crisis first-hand. The U.S., governments across South America and international donors must step up to help.
Democrats' "extremism and obstruction have hijacked the Senate's productivity for long enough," the email said.
He worried that the NFL might no longer have a talent pool to draw from.
"This is a way for Senator Rubio and the Republican party to get credit for caring about women and families without truly investing in a way to address a major problem," said Andrea Flynn, a fellow at The Roosevelt Institute.
A report suggested Ivanka Trump's campaign for paid family leave was about to take a back seat after the departure of her top adviser on the issue.
The edits to Rubio's Wikipedia page went over well with the internet.
The Florida senator says that increased deficit spending will require cuts to entitlements.
Rubio says he could have learned a lot from the "good strategies" on HBO's "Game of Thrones."
This is not the first time that Trump has sought to demean someone with the prefix "little."
The Florida senator has been given additional security detail since the threat.
In the years since Obama acted, human rights in Cuba have gotten worse.
Haley said there's "no love" between the U.S. and Russia.
McCain, the 2012 failed Republican presidential candidate, now faces a spirited challenge in Arizona from Democrat Ann Kirkpatrick.
The anti-Clinton narrative has become so entrenched that even solid liberals respond to attacks on her with "Well, yes, she does make me squirm at times."