Bomb – Again, because they have no Jurisdiction. Think about what happens when a diplomat is accused/does a crime. If it happens here can we prosecute the guy? No. Why? Because we have no Jurisdiction.
Even if the secular courts here judged up everything correctly acc. to the 7 Mitzvos Bnai Noach, they still wouldn’t have Jurisdiction. Why? Because a Jew can only be judged up acc. to Torah laws by a proper Bais Din with proper Dayanim.
Nowadays there are no Bottey Dinim that can judge up capital crimes. Sometimes, although rarely, you’re allowed, even nowadays, to be Moiser to the gov.