The TSA has long had master keys for each type of TSA padlock. Stolen keys have purportedly been available for some time, but someone used a picture of the TSA keys posted to the Washington Post to create 3d printable keys.
When any organization proposes that governments be allowed to have extra keys to citizen's encrypted traffic, this is exactly what we are going to get.
Any crypto system that has multiple keys is more vulnerable than a system that has one key.
And protecting keys is hard if you have to distribute them.