As Biden wraps up half-century political career, his failure to turn page on Trump weighs on president

While the longtime Democratic senator from Delaware, two-term vice president and one-term president can point to a plethora of legislative victories and other achievements during his four years in the White House, Biden leaves office as one of the most unpopular presidents in the nation's history.

Biden, in an open letter to the American people on Wednesday, appeared to acknowledge that he wasn't able to follow through on the integral pledge from his 2020 campaign.

"I ran for president because I believed that the soul of America was at stake. The very nature of who we are was at stake," Biden wrote. 

But he lamented "that's still the case."

"President Biden ran on and was elected on a platform of a return to normalcy in 2020. And while voters appear to have wanted that in principle, history will remember Biden as having been unable to deliver on his promise," veteran political scientist Wayne Lesperance, the president of New England College, told Fox News.

Biden, in a farewell address to the nation this past week, aimed to cement his legacy as a president who pushed to stabilize politics at home while bolstering America's leadership abroad, and as a leader who steered the nation out of the COVID-19 pandemic, made historic investments in infrastructure and clean energy, pumped up the economy and made historic gains in job creation, and lowered prescription drug prices for millions of American.

But he also used his speech "to warn the country" that "an oligarchy is taking shape in America of extreme wealth, power and influence that literally threatens our entire democracy. Our basic rights, freedoms, and a fair shot for everyone to get ahead."

Biden ends his single term in the White House with approval ratings that remain well underwater.

Biden's approval ratings slipped underwater in the autumn of 2021 and never reemerged into positive territory.

The latest polls also indicate that many Americans view Biden's presidency as a failure.

Just over a third of adults nationwide questioned in the Marist poll said Biden will be remembered as one of the worst presidents in American history, with 19% saying he will be considered a below-average president.

Twenty-eight percent of participants offered that Biden's legacy will be considered average, with 19% saying he would be regarded as above average or one of the best presidents in the nation's history.

Biden, in one of his last interviews in office, told MSNBC in an acknowledgment of regret that "ironically, I almost spent too much time on the policy, not enough time on the politics."

Also weighing on Biden's legacy - his ill-fated re-election run.

In April 2023, the then-80-year old Biden announced his re-election bid. Fourteen months later, Biden was losing ground to Trump in 2024 election polling when he suffered a disastrous debate performance against the former president, which reignited deep concerns among voters over his physical and cognitive ability to handle another four years in the White House.

Less than a month later, following an outcry from fellow Democrats, Biden announced he was ending his campaign and endorsing Vice President Kamala Harris to serve as the party's 2024 standard-bearer.

Two and a half months after Trump's convincing victory over Harris, Biden is still facing plenty of blame for the Democrats' electoral setbacks in November.

Longtime Democratic strategist James Carville told Fox News that "the Joe Biden story is one of the great tragedies of American politics. I really mean that. He should be having a glorious, well deserved, highly acclaimed retirement. And he's not."

And Carville, a political mastermind behind former President Bill Clinton's historic 1992 White House victory, argued that "it's hard to blame anybody but him." 

But Biden's friends and supporters feel that the negative views of the soon-to-be former president will shift over time.

"Biden, because of some of the legislation that he was able to muscle through, is going to look pretty good," John MacNeil, a longtime Democratic consultant, Biden supporter, told Fox News. "The fruits of some of what Biden accomplished are only going to become visible over the next few years."

But MacNeil, a founding director of Unite the Country, the super PAC that boosted the then-former vice president through the 2020 Democratic primaries, also acknowledged that Biden may be "seen as just a hiccup between Trump one and Trump two. That is something that historians will talk about."