[JMS]

This is not news. The President has the Constitutional authority to fire anyone in the Executive Branch - especially a duplicitous scumbag like Comey.

[boatbums]

Especially since ALL the Dims, Hilliary, Rosenstein, etc. were DEMANDING that Comey be fired! It was his fault Hillary lost, right? That's what they all claimed, right? So, when Trump fires Comey, all of a sudden it's an impeachable offense??? I remain amazed at how much these hypocritical, lying, duplicitous people get away with.

[DesertRhino]

He can fire Comey anytime, no reason needed. He can order an investigation started or stopped. He can pardon anyone who is the target of any Federal investigation.

He can WALK INTO the FBI HQ, sit in Comey’s or Wray’s chair and say “what’s the password to your government computer here on the desk, I want to look through your files”.

So how can he “obstruct” something?

If he does something for crass personal reasons, such as covering up a bribe, Congress can impeach him.
The DOJ an FBI are powerless.

[Jim Noble]

The President has complete authority over DOJ and the FBI, including hiring and firing (a few positions require Senate confirmation).

The President can order investigations to be started, he can order them to be ended. He can command prosecution of individuals, he can convene Grand Juries. He can order indictments to be presented to Grand Juries.

He is the chief law enforcement officer of the United States.