Wait, why did he tweet that?

Why did the Obama Administration start an investigation into the Trump Campaign (with zero proof of wrongdoing) long before the Election in November? Wanted to discredit so Crooked H would win. Unprecedented. Bigger than Watergate! Plus, Obama did NOTHING about Russian meddling.

— Donald J. Trump (@realDonaldTrump) March 5, 2018

I can't imagine:

The grand jury investigating alleged collusion between Russia and Donald Trump's presidential campaign has sent a witness a subpoena seeking all...emails, text messages, work papers, telephone logs and other documents going back to Nov. 1, 2015, 4½ months after Trump launched his campaign.

NBC News reported last week that Mueller's team is asking pointed questions about whether Trump knew about hacked emails from Hillary Clinton's campaign before the public found out. The subpoena indicates that Mueller may be focused not just on what Trump campaign aides knew and when they knew it, but also on what Trump himself knew.

In addition to the president, the subpoena seeks documents that have anything to do with these current and former Trump associates:

Steve Bannon, who left the White House as chief strategist in August.

Michael Cohen, a personal lawyer for Trump who testified before congressional investigators in October.

Rick Gates, Trump's former deputy campaign manager, who pleaded guilty last month to conspiracy and lying to the FBI.

Hope Hicks, who resigned last week as Trump's communications director.

Corey Lewandowski, Trump's campaign manager until June 2016.

Paul Manafort, a former Trump campaign manager and Gates' business partner, who pleaded not guilty to money laundering, conspiracy and making false statements last week.

Carter Page, a former Trump campaign aide.