“This is Joe Biden running from his record and trying to wipe away this very clear conflict of interest,” she added.
The anti-Trump Republican PAC put up the ads to mock the couple's response to the coronavirus.
The hearing will focus on both platforms' censorship of the New York Post's Hunter Biden email story.
The decision comes as states prepare for a spike in mail ballots this election cycle.
Polls show Harrison effectively tied with Graham.
Collins has already stated she will not vote in favor of Barrett's nomination because of the vote's proximity to the presidential election.
The announcement comes just after Trump said he has informed Congress of his plan to remove Sudan from the U.S. list of state sponsors of terrorism.
The FBI has asked Tony Bobulinski, former business partner of Hunter Biden, to sit for an interview on Friday, Senator Ron Johnson (R., Wis.) told reporters.
A federal judge has rejected a suit by the Trump campaign attempting to prevent N.J. governor Phil Murphy from sending mail-in ballots to all voters in N.J.
Biden's “big statement” forced a clean-up from the campaign.