WASHINGTON, Dec 20 (Reuters) - President Donald Trump stormed back into office with a shock-and-awe policy blitz that expanded presidential power and reshaped America's relations with the world. But it has come at a steep cost: as he enters the New Year and midterm elections loom, his once unshakeable hold on Republicans is slipping, say historians and analysts.
Back in January, as Trump triumphantly returned to the White House for a second term, he vowed to remake the economy, the federal bureaucracy, immigration policy and much of U.S. cultural life. He delivered on much of that agenda, becoming one of the most powerful presidents in modern U.S. history.
