It probably will yield good results for the next decade but will set a bad precedent for the world in general and back us into a corner as confidence in the security for this stuff improves and the next decades passes.
Software does not appear to be on a trajectory of increased security or reliabilty. It has always been hard to verify correctness, let alone measure how vulnerable and easy to exploit software is. Testing software has not been a suitable replacement to a large technical user base constantly tweaking and improving said software.
If software were to become reliable, I'm sure those pioneers in reliable software can pave the way to reasonable use in mission critical, high value espionage targets.
Until then, legislation like this will pave the way back to what has worked for centuries.
