The witness who accused the Bidens of corruption in Ukraine is charged with false testimony. The prosecutor accuses him of artificially fabricating the scandal for which the Republicans are investigating the president.

There was no evidence to support the claims of that confidential source. Despite this, Republicans have summoned Hunter Biden in the House of Representatives and have voted to open an investigation for a possible impeachment against the president, writes Julian Zelizer. The special counsel's accusation dismantles the main testimony against Joe Biden, Zelizer says.