Once a law is passed that permits abuse of power, that new toy is available to whoever is in control of the government, which could be the parties he likes. Seen this kind of thing over and over again when one group gains control of a level of government, passes a bunch of authoritarian crap under the belief they have a mandate to rule forever, and then lose power, giving their opponents control over that new authoritarian toy. In the end, the political class gains more power and the public loses. What rarely happens is a change in leadership giving up the power the previous leadership gave itself.