AdvertisementSKIP ADVERTISEMENTYou have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.The rebranding of a former White House digital office into the new Department of Government Efficiency signals its potential limits, budget experts said.Elon Musk, middle, during President Trump’s inauguration at the Capitol on Monday. Mr. Musk’s project to overhaul the government will be based out of a onetime White House dig...