The former first lady has repeatedly ruled out running for president but she remains a popular choice among 2020 Democratic primary voters.
Hunter Biden speaks publicly for the first time to ABC News Tuesday. Here are five questions to look for about his roles in Ukraine and China.
Biden confirms his family won't be in administration as son announces resignation from Chinese private equity company's board.
Hunter Biden stepped down from the board of a Chinese-backed private equity company and has vowed to cease all foreign work should his father, Joe Biden, be elected president in 2020.
Bill Maher expressed his concern to Amy Klobuchar Friday night that Joe Biden is looking less and less likely to defeat President Donald Trump in 2020.
The president made his feelings about the Democrats perfectly clear at the rally in Lake Charles on Friday,
"Wasn't it inappropriate for someone like you in the middle of all this to have your son collecting money?" Brokaw asked Joe Biden in 2008.
The president hit out at Biden once again during a campaign rally in Minneapolis.
The former vice president also labeled Rudy Giuliani "a thug" amid the Ukraine and impeachment saga.
President Donald Trump slammed "sinister faker" Democrats and Joe and Hunter Biden on Thursday, at his first rally since the start of what he called an "insane impeachment witch hunt."
The vice president repeatedly dodged questions on whether he knew that delayed military aid to Ukraine was linked to Trump's interest in corruption allegations against Biden and his son.
The latest Quinnipiac poll found that every Democratic Party frontrunner would defeat President Donald Trump if the election were held today.
Republicans have sought to pivot the scandal's focus away from Trump's efforts to get other nations' help in the presidential election and are instead focusing on alleged wrongdoing by Joe Biden and his son.
"No foreign government should ever be involved in a U.S. election in any way," Representative Adam Kinzinger told Fox News.
The governor says he is "skeptical" of the impeachment inquiry into President Trump's dealings with Ukraine.
Mitt Romney, Susan Collins and Rob Portman are part of a small group of GOP Senators who have pushed back against Trump's actions and remarks.
"Now, he's reading from it, claiming that this website hack job is an affidavit," Joe Scarborough said, playing clips of Giuliani on Fox News.
Questions remain about why Obama has refused to endorse his former second-in-command, who once gave a speech that prompted Obama to tell an aide "shoot me now."
Louisiana congressional candidate Rob Anderson also branded President Donald Trump's attorney a "rogue sentient Gummy Bear."
"Allegation after allegation of corruption, never followed up, never looked at," Giuliani said.
"We were devoted to the Constitution," Linda Chavez said. "And what I see happening now is people who are absolutely abrogating their duty.
Ohio Republican congressman Jim Jordan became the latest defender of Donald Trump to question journalists for taking the president at his word.
A poll conducted among Wisconsin voters last week showed that the former vice president had a 9-point lead over President Trump.
Donald Trump's attorney said "there's nothing wrong" with the president asking foreign countries to investigate the Bidens and denied knowing the former vice president would run for the presidency when he started investigating himself in 2018.
"I gotta tell you, you read these... it seems that Ukrainian officials and some top American officials sure saw a quid pro quo," Chris Wallace pointed out.
"We can investigate the crimes of Donald Trump for the next four or five years and if we do, we will be going into a second term," Richard Painter warned.
"It's clear he considers the presidency a free pass to do whatever he wants, with no accountability," Biden wrote in a newspaper op-ed.
Vermont Senator Bernie Sanders maintained his polling lead of all 2020 Democratic candidates among college students, while former Vice President Joe Biden was overwhelmingly ignored in a recent survey.
Pence has been implicated in Trump's efforts to pressure the Ukrainian government into opening an investigation into 2020 rival Joe Biden.
People with nothing to hide need not go to such illegal lengths to prove their innocence.