http://www.politico.com/story/2015/12/rahm-obama-clinton-troubles-216401

Rahm's troubles ripple toward Obama, Clinton

Republicans want to make the Chicago mayor's woes a political liability for his former bosses.

By Sarah Wheaton

12/03/15 06:18 PM EST

Chicago Mayor Rahm Emanuel’s struggles are reverberating in Washington, where he’s causing headaches for his most powerful of close friends and former bosses, the Obamas and the Clintons.

Republicans are eager to make Emanuel — who worked in both the most recent Democratic administrations — a political liability for President Barack Obama and the campaign of Hillary Clinton, both of whom have resisted calling for his resignation over the handling of a video showing a police officer shooting a retreating black teenager. And even among the president’s allies, the famously profane Emanuel is a polarizing figure after playing a key role in the tough-on-crime legislation of the mid-1990s that Obama has made his mission to undo.

A top GOP strategist predicted that Emanuel would become a “massive liability” for Hillary Clinton.

“At some point, she’s going to have to come out — I think the pressure’s going to build on her — on where she stands on her longtime family adviser,” the strategist said.

https://en.wikipedia.org/wiki/Rahm_Emanuel

From wiki, Rahm is more than just an associate of the Clintons, he has been a deep part of their political career:

Working early in his career in Democratic politics, Emanuel was appointed as director of the finance committee for Bill Clinton's 1992 presidential campaign. In 1993, he joined the Clinton administration, where he served as the Assistant to the President for Political Affairs and as the Senior Advisor to the President for Policy and Strategy before resigning in 1998.

http://www.bloomberg.com/politics/articles/2015-12-05/clinton-voices-confidence-in-rahm-emanuel-as-chicago-mayor

Clinton Voices Confidence in Rahm Emanuel as Chicago Mayor

In Iowa, the Democratic front-runner also called for a deeper look into the nation's visa waiver program following the shootings in San Bernardino.

Hillary Clinton, the front-runner for the Democratic presidential nomination, said she still has confidence in the embattled mayor of the city where she was born: Rahm Emanuel of Chicago.

"I do," Clinton told reporters Friday evening in Fort Dodge, Iowa. "He loves Chicago and I'm confident that he's going to do everything he can to get to the bottom of these issues and take whatever measures are necessary to remedy them."

https://www.washingtonpost.com/news/post-politics/wp/2015/12/04/sanders-no-elected-official-should-be-shielded-in-wake-of-chicago-shooting/

Sanders: No elected official should be ‘shielded’ in wake of Chicago shooting

Democratic presidential hopeful Bernie Sanders added his voice Friday to those calling for a federal investigation of the Chicago Police Department — including his party’s front-runner, Hillary Clinton — but took it a step further.

Amid calls for Chicago Mayor Rahm Emanuel to step down, Sanders also urged the resignation of “any elected official” who knew that a recording was improperly withheld in the high-profile case there of a black teenager fatally shot by a white police officer.

“No one should be shielded by power or position,” Sanders, a Vermont senator, said in a statement about the case of 17-year-old Laquan McDonald that has roiled the city.