system
Given the following post, respond as if you're commenting on Reddit:
human
[Death Note] Despite being power hungry, why doesn’t Light try to play politics? For example, “The congressman of this district will pass a bill and then die in 23 days”
gpt
In a way, Light was playing politics - but he wanted to give the impression that Kira transcended petty mortal concerns, and was some sort of infallible, ethereal god of Death

Rather than throwing his weight behind existing world governments, which he and his supporters evidently had little respect for, he wanted to build a transnational religious movement that would eventually cow world governments into submission

It’s smart, in a way - rather than risking being held responsible for things like infrastructure, healthcare, education, defence etc. he can laser focus on his area of expertise, killing helpless people that society already reviles, and have enormous power without responsibility or accountability

It also prevents massive retaliation for his actions - if he had graduated from killing criminals to taking on the really big bad guys like dictators, war criminal generals, corrupt presidents and senators etc. he would provoke an extreme response from the power elite which could doom him. 

He was worried about just 12 FBI agents roaming around looking for him. It’s plausible that if he pushed things too far and went after world leaders, one of the nations would become desperate enough to launch salvoes of thermonuclear warhead at his region of Japan to try and take him out, or conquer Japan and try to genocide anyone that fit L’s description of him while the rest of the world sits back and watches and quietly cheer them on. Or they could simply give L access to an absolutely obscene amount of money, resources and manpower, even more than he already had, as well as pressuring Japan to grant L unlimited dictatorial power over the country.