President-elect Donald Trump and Elon Musk have big ambitions for making the federal government leaner and more efficient by reviewing its budget and operations from top to bottom.

Elon Musk has slept on Tesla's factory floor and instructed SpaceX employees to walk out of meetings where they aren't adding value.

President-elect Donald Trump made good on one of his campaign promises Tuesday night when he officially appointed billionaire Elon Musk to lead the new “Department of Government Efficiency,” along with entrepreneur Vivek Ramaswamy.

Led by Elon Musk and Vivek Ramaswamy, the body announced by Trump would operate outside government and provide advice to the White House on cutting spending.

Musk has emerged as a prominent member of Trump's inner circle. Tesla has lobbied for electric vehicle subsidies and other benefits over the years.

The billionaire activist investor who last year took on Disney in a failed proxy fight said he’s the reason Elon Musk helped Donald Trump clench the presidential election. Months before the Tesla CEO threw his support behind the now president-elect,

The tech billionaire joins the incoming administration to "dismantle government bureaucracy" - but what's in it for both of them?

MSNBC’s Lawrence O’Donnell explains how Elon Musk was humiliated in failing his first power play in the Senate and humiliated by Donald Trump in public, “as Donald Trump's twisted psyche demands that he do,

When it comes to Cabinet appointees, things appear to be ramping up fast for the new Trump administration. Here’s a look at his probably picks. While Donald Trump has announced a few people who will be part of his new administration,

Trump has given two entrepreneurs a mission to make the government more efficient. It's unclear how Elon Musk and Vivek Ramaswamy would accomplish that.