Biden said he feels assured the courts, the Congress and national security officials will carry out the rule of law. The comments followed another week of back-and-forth on democratic practices.
Federal authorities say they've been asked to look into the discovery of some mailed ballots in Pennsylvania, an announcement that has appalled former Justice Department officials and voting experts.
Senate Majority Leader Mitch McConnell and others rebuked President Trump's equivocation about whether he might transfer power peacefully against a backdrop of uncertainty about the ongoing election.
The onetime presidential hopeful responded to a suggestion by President Trump that he might not accept the results of an election in which he lost; the White House later sought to modify that stance.
Earlier in the day, the president said he expects this year's election results to go to the Supreme Court, defending his push to swiftly replace the late Justice Ruth Bader Ginsburg.
Changes in Wisconsin and North Carolina mean absentee ballots that are postmarked by Election Day will count, if received within six and nine days of the election, respectively.
In 2000, lawyers and election officials endlessly examined and debated butterfly ballots and hanging chads. Now, the legal arguments are more complex and center on the rules governing mail-in voting.
Pennsylvania's governor and state legislature — as well as the national political parties and campaigns — have been at odds, leading to election workers doing what they can to help voters keep up.
The postmaster general spoke to dozens of the nation's top election officials Thursday, ahead of an election season that will see record numbers of mail ballots.
President Trump's lawyer sought to downplay his meeting and contacts with a Ukrainian member of parliament who has been described by the U.S. as attempting to interfere in the 2020 election.
President Trump's attacks on mail voting combined with changes by the postmaster general have undermined some confidence in the system — but experts say the Postal Service can handle the job.
The U.S. sanctioned and charged foreigners it said were connected with interference. Meanwhile, Microsoft announced that it uncovered cyberattacks on political targets.
Secretary of State Brad Raffensperger says 1,000 people voted twice in the state's primary election this year but said he had no evidence the cases weren't honest mistakes. The state is investigating.
