Besides celebrating his 71st birthday, Trump also found out that he is officially under investigation for obstruction of justice, an impeachable offense. Oddly enough, Trump was never under investigation about anything, as we found out when ex-FBI Director James Comey testified on his own last Friday (IAB posted about it here.)
The Washington Post calls this a "major turning point" in the FBI's investigation of Russia’s alleged meddling in the 2016 presidential election. Special counsel Robert Mueller is in charge of the investigation.
Of course it didn't help when Don Jr. accidentally confirmed Comey's testimony against dad. After all, Trump was never under investigation for possible ties to Russia -- that is until he fired Comey. That was enough to investigate him on the grounds of obstruction of justice.
The 36 percent of Americans who currently back Trump will no longer be able to use the "He's not under investigation" response anymore.