Jamie Dimon and Elon Musk.Win McNamee for Getty Images and Steve Granitz for FilmMagicJamie Dimon says Elon Musk's proposed department of government efficiency is a "very good idea.""I think governments have to become more efficient, more competent," he said to CNBC.Donald Trump has said he's on board with creating a "government-efficiency commission."JPMorgan Chase CEO Jamie Dimon says he approves of Elon Musk's proposal to create a new department of government efficiency — or, in Musk's words, DOGE.Tesla and SpaceX's CEO Musk recently floated the idea of working in former President Donald Trump's government as part of such a new commission if Trump wins in November."Ok, so — Elon, this idea about having an efficiency commission, I actually like the idea," Dimon said in an interview with CNBC-TV18, which aired on Tuesday."I think governments have to become more efficient, more competent," he said.