Nonprofit Groups Sue Trump’s DOGE Moments After Oath

Their lawsuits said the so-called Department of Government Efficiency, President Trump’s cost-cutting operation, violated a law requiring federal advisory committees to include a balance of views.

A Trump Oligarchy Is Moving to Washington, and Buying Up Prime Addresses

Billionaires and multimillionaires are flocking to a city where power has been more important than money, but is now deeply intertwined with it.

Who Is Coming to Trump’s Inauguration — and Who Isn’t

Billionaires, foreign leaders and celebrities including Mike Tyson and Carrie Underwood will appear at the inauguration. Some prominent Democrats are taking a pass.

What to Know About the E.V. Tax Credit That Trump Might Repeal

Rules for a $7,500 tax break for electric vehicle purchases and leases recently changed, but more far-reaching changes are expected when President-elect Donald J. Trump takes office.

Elon Musk Is Expected to Use Office Space in the White House Complex

The location suggests that Mr. Musk, who owns companies with billions of dollars in contracts with the federal government, will continue to have remarkable access to President-elect Donald J. Trump.