JPMorgan Chase's CEO said Friday that he doesn't plan to join the next presidential administration.Jamie Dimon said he expects to stay at JPMorgan "for a long period" rather than join the government.One way that Dimon might do that after stepping down as CEO is to stay on as chairman. Sign up to get the inside scoop on today’s biggest stories in markets, tech, and business — delivered daily. Read preview Thanks for signing up! Go to newsletter preferences Thanks for signing up! Access your favorit ...