Joe Biden is warning that those “tasked with enforcing the law are abusing their powers”, in a measured critique of the Trump administration.
The comments came a day after Mr Biden declined to respond directly to President Donald Trump’s latest attacks on the Democratic presidential hopeful.
Speaking on Wednesday to Columbia University Law School graduates via video, Mr Biden urged them to “protect the very foundations of democracy”.
“Trust in self-governance. Because right now, it’s under attack,” Mr Biden said.
“The very people tasked with enforcing the rule of law are abusing their powers, protecting their friends, weakening the very principles that make our country work.”
His comments come amid escalating rhetoric from Mr Trump and his allies pushing conspiracy theories and alleging improper behaviour during the Obama administration.
Asked on Tuesday night how he’d respond to the allegations, Biden said: “I don’t want to get down in the mud with these guys.”
Speaking at a Yahoo News virtual town hall on Tuesday, Mr Biden said Mr Trump was trying to distract voters from his inadequate response to the coronavirus pandemic, which has killed more than 90,000 Americans.
Broadly dubbing his allegations Obamagate, Mr Trump has pointed to the legal case of his former national security adviser Michael Flynn, suggesting that the “unmasking” of Mr Flynn’s name as part of legal US surveillance of foreign targets was criminal and motivated by partisan politics.
There is no evidence of that, and Mr Trump’s accusations misrepresent the facts of the case.
The “unmasking” of people in surveillance reports is a routine, legal activity in government. The Trump administration made 10,012 such requests in 2019.
But they do do not often become public, and in the Flynn case, Trump supporters point to it as evidence Obama loyalists were out to undermine Mr Trump from the start. The president himself has called it the “biggest political crime and scandal in the history of the USA”.
“This is his pattern. Diversion, diversion, diversion, diversion,” Mr Biden said on Tuesday.
“The greatest crime? I mean, my Lord.”