Donald Trump is vowing to reduce wasteful federal spending by tapping two billionaires — Tesla CEO Elon Musk and entrepreneur Vivek Ramaswamy — to spearhead the initiative, which the president-elect is calling the Department of Government Efficiency ...

Musk has been so aggressive in pushing his views about Trump’s second term that he’s stepping on the toes of Trump’s transition team and may be overstaying his welcome at Mar-a-Lago, according to two people familiar with the transition who have spent time at the Palm Beach, Florida, resort over the past week.