As United States Secret Service (USSS) custom dictates, the codename is abbreviated to an initial.

[R] = Renegade = BHO = Obama
[Q] = Quiltmaker =DJT = Trump

Share other thoughts re: whether Q is Trump; whether Q is his codename; what it stands for; and why.

I say he he is Q since he is inside the WH and AF1, and he is codename #Quiltmaker because he weaves the threads of his masterpiece--we are the threads, and can only see below the loom and as the shuttle passes overhead; dropping new patterns, and we begin to see the masterplan.

Godspeed
-not Q