GOP congressional leaders have stood aside the past four months as President Donald Trump has attacked legislative branch prerogatives — shuttering agencies, canceling federal grants and imposing sweeping tariffs.

It’s not really about the books. President Donald Trump’s abrupt firing of top officials at the Library of Congress and equally sudden attempt to appoint a slate of loyalists as replacements has instead morphed into an enormous fight over the separation of powers,

Lawmakers are raising separation-of-powers concerns as the White House seeks to install a Justice Department official at the legislative-branch institution.