I would guess CC is referring to about 200 civil servants in the DoD being forced to sign lifetime NDA's over the fighter jet replacement plan:
http://www.huffingtonpost.ca/2016/11..._13209940.html
The only link I can find regarding muzzling Immigration officials goes back to The Rebel, so is considered debunked by default.
I did find a story indicating that scientists are still largely muzzled under Trudeau, however:
http://www.torontosun.com/2016/08/08...st-like-harper