The FEC will now crack down on "unlawfully false or fictitious" political candidates.
The New York Times reports that Clinton claimed the advice came at a dinner party in 2009.
The changes come amid growing pressure over the foundation's role.
OPINION | The modern PR firm is too focused on billable hours.
Assange said WikiLeaks would be "very happy" to publish info on Trump.
Influencing legislation on behalf of clients is a cutthroat business. Personal and professional...
"My party and its standard-bearer leave me no choice," former Treasurer Rosario Marin said.
"Your generation embodies everything that is most right with America," she wrote.
"I just don't see it," Rep. Carlos Curbelo (R-Fla.) said of Trump's efforts against Clinton.
McMullin is also on Colorado's ballot.
"That's the way we can lose the state," he said.
Carson said the press is trying to "affect weak-minded people."
"He’s a sincere guy trying very hard to get this country back on the right track."
Trump says sometimes he is "too honest."
Sanders has scheduled the launch of his political organization for next week.
OPINION | The voting public has been given a false choice this fall.
Kristol floated "right-wing intolerant mean-spirited news" instead.
His lead over Clinton among stock market investors is down 15 points since June.
"If you start pivoting, you're not being honest with people," he said.
The viral video contrasts Trump's past statements with current views.
McMullin's campaign has not ruled out legal action over California's election rules.
A shooter assassinated Yitzhak Rabin in November 1995.
"Let's call a spade a spade," he said.
"I'm definitely not with him or her," he said.