Trump’s tweet raises obstruction specter

WASHINGTON — The shifting explanations for why President Donald Trump fired national security adviser Michael Flynn have revived questions about whether the president may have obstructed an ongoing investigation of potential contacts between his campaign and Russia.

Pressure on the administration has mounted since Flynn last week pleaded guilty to lying to the FBI about his conversations with the Russian ambassador, with prosecutors revealing that he is now cooperating with special counsel Robert Mueller’s investigation. And a muddled White House response, including a problematic presidential tweet, has left some Trump confidants worried that the president is not being well-served by his legal team and believing his lawyers have painted a too-rosy picture of the president’s potential plight.

The president’s aides and legal advisers have scrambled for 48 hours to explain a presidential tweet that raised the specter of obstruction. It read: “I had to fire General Flynn because he lied to the Vice President and the FBI. He has pled guilty to those lies. It is a shame because his actions during the transition were lawful. There was nothing to hide!”

That tweet appeared to indicate a change in the White House explanation for Flynn’s firing, suggesting Trump was aware when the White House dismissed Flynn on Feb. 13 that the national security adviser had lied to the FBI, whose agents had interviewed him weeks earlier.

Former FBI Director James