That's why some conservatives are raising red flags about Abedin, saying her family has ties to terrorist organizations.
The two women, who've worked together more than two decades, are
inseparable, having developed an almost mother-daughter like
relationship.
Abedin has Clinton's ear on a daily basis and her name can be seen on
a majority of those State Department emails that have surfaced in the
investigation over Clinton's private email server.
That connection isn't the only one raising concerns about Abedin. She
is a Muslim-American who grew up in Saudi Arabia and worked as an
editor under her mother on the Journal of Minority Muslim Affairs.
Former Rep. Michele Bachmann, R-Minn., has sounded the alarm for years.
"What this journal did is look at countries that were not Islamic
countries and they tried to push the advancement of Sharia law in
countries that were not Islamic," Bachman told CBN News.
Critics say the journal opposes women's rights and blames the United
States for 9/11. Abedin's father founded the journal and her mother is
listed as editor-in-chief. Her brother is also involved -- and for
nearly a decade, so was Abedin.
"Huma Abedin was listed as an assistant editor deciding what they
would print, what the stories would be," Bachman said. "This was the
family business, advancing Islamic Sharia law."
The Clinton campaign is pushing back, saying Abedin's "name was
simply listed on the masthead… She did not play a role in editing at the
publication."
But Abedin's connection to the journal isn't the only controversy at
play here. The family also has ties to Abdullah Omar Nasseef, a longtime
family friend who helped start the journal.
He has also been identified as someone with financial connections to terror groups like al Qaeda and the Muslim Brotherhood.
Given these revelations, Bachmann wants to know why Abedin received a security clearance throughout her years with Clinton.
"From what I know of federal law, she never would have been given a
security clearance to be anywhere near the first lady or near a United
States senator with those kind of more than questionable family
relationships," Bachman said.
Bachmann and some of her GOP colleagues raised these issues about
Abedin in 2012 with a detailed letter saying that she had "immediate
family connections to foreign extremist organizations." But it went
nowhere and even came under ridicule by fellow Republicans.
"These sinister accusations rest solely on a few unspecified and
unsubstantiated associations of members of Huma's family, none of which
have been shown to harm or threaten the United States in any way," Sen.
John McCain, R-Ariz., said at the time.
But many things have changed since then -- namely Clinton's email
scandal with Abedin's name often front and center, not to mention
renewed scrutiny in the current presidential race.
"Take a look at where she worked, by the way, and take a look at
where her mother worked and works. You take a look at the whole event,"
Republican presidential nominee Donald Trump said.
Bachman agreed, warning, "The Bible tells us who we surround us with makes a big difference in who we are."
With this presidential race almost over, time will tell if Abedin and her family become more of a problem for Clinton.