Joe Biden finally backed off his vows to defy any congressional subpoena to testify in the coming impeachment trial, but the sideshow shows yet again how absurd the whole thing’s become.

With Democrats pushing to call witnesses in the Senate trial, some Republicans suggested Biden should testify, too — since President Trump is accused of wrongdoing in pushing for investigations of Joe’s work in Ukraine, and his son Hunter Biden’s profitable dealings there.

Biden was traveling Iowa in his “No Malarkey” campaign bus last Friday when The Des Moines Register asked what he’d do if subpoenaed. The candidate said he’d tell Congress to go whistle — because testifying would mean letting Trump change the subject.

Biden has no executive-privilege excuse, so he got hit with a weekend of bipartisan criticism — and reversed himself, saying he would comply if subpoenaed.

READ MORE AT THE NEW YORK POST