White House bans CNN reporter from press conference

[*bfine32*]

I've been critical of the way trump and his administration have behaved toward the press; however, I do not feel that barring one person, who had already displayed the propensity to ask questions not related to the subject matter, from that press conference to be violating the 1st Amendment.

We also do not know if this reporter has been disruptive in the past.

Given I'm not the expert of the Constitution as many but: If the WH does not let everyone who has press credentials to attend every press conference are they violating the 1st Amendment?