It would be a bad idea for US to interfere there. North Korea as we know is ruled by a stupid unpredictable ruler and one wrong move can put lives of millions of South Koreans, Japanese and Chinese at risk. It's better to solve the problem in a less bloody way with North Korean neighbors taking the lead.
It seems to me that you have a position of a coward. You offer like the ostrich to bury its head in the sand? Lol. If there is a problem she will not disappear. You have to understand it. I urge you to declare war on North Korea but is ready this should be always. Trump needs to tighten control over the economic blockade and financial ruin North Korea.