He posted a tweet with the same general ideas nine minutes later.
The FBI had been reviewing Strzok's employment after the politically charged text messages were discovered past year.
Trump kicked off his tweet by (roughly) quoting Fox News legal analyst Gregg Jarrett, who made the wild claim on Fox & Friends Tuesday morning that bias at the FBI drove the agency to clear Hillary Clinton in the investigation into her email server and "frame" Donald Trump for his campaign's ties to Russian Federation.
"The decision to terminate was taken in response to political pressure, and to punish Special Agent Strzok for political speech protected by the First Amendment, not on a fair and independent examination of the facts", he said. "A lengthy investigation and multiple rounds of Congressional testimony failed to produce a shred of evidence that Special Agent Strzok's personal views ever affected his work". The FBI had been reviewing his employment.
There is no indication that the probe will be dropped. "No Collusion, No Obstruction - I just fight back!"
In addition to the Mueller probe, Strzok was also involved in the investigation of Hillary Clinton's use of a private email server while serving as secretary of state.
House Republicans cheered Strzok's firing, with House Majority Leader Kevin McCarthy saying on Twitter that it was "long overdue".
Swecker, who outlined his views in a Fox News opinion piece, said Wednesday the three fired former Federal Bureau of Investigation officials violated rules and procedures while representing themselves "as heroes", so he and many other in the Federal Bureau of Investigation "deeply resent" them. "He tarnished the FBI's sterling reputation and severely damaged public trust in an institution where trust is paramount".