Just 2 days ago, Richard Burr said the intelligence committee would not investigate new allegations of collusion between the Trump team and the Russian government. He has long worked to downplay these allegations by treating them as baseless.

Following a classified briefing by FBI director James Comey, Burr has done a full 180. He now says the committee will thoroughly investigate the issue, subpoenaing both Trump staff and Obama officials if necessary.

This same briefing has House Democrats up in arms, but this rapid and dramatic shift in a senior Republican is perhaps most telling. Just what exactly does the intelligence community know that is so damning to prompt this?