The president has immunity. He can grant impunity to his aides by promising them pardons. He knows the courts could never enforce their decisions since the Department of Justice will do his bidding, whatever it may be—and he’s acting like it.
The Mad King was obsessed with it. He loved to watch people burn, the way their skin blackened and blistered and melted off their bones. He burned lords he didn’t like. He burned Hands who disobeyed him. He burned anyone who was against him. Before long, half the country was against him. Aerys saw traitors everywhere. So he had his pyromancer place caches of wildfire all over the city.
Where’s Jaime