WASHINGTON  On May 17, 2005, the White House’s political affairs office sent an e-mail message to agencies throughout the executive branch directing them to find jobs for 108 people on a list of “priority candidates” who had “loyally served the president.”

“We simply want to place as many of our Bush loyalists as possible,” the White House emphasized in a follow-up message, according to a little-noticed passage of a Justice Department report released Monday about politicization in the department’s hiring of civil-service prosecutors and immigration officials.

The report, the subject of a Senate oversight hearing Wednesday, provided a window into how the administration sought to install politically like-minded officials in positions of government responsibility, and how the efforts at times crossed customary or legal limits.

Andrew Rudalevige, an associate professor of political science at Dickinson College in Pennsylvania who studies presidential power, said that while presidents of both parties over the last half-century had sought ways to impose greater political control over the federal bureaucracy, the Bush administration had gone further than any predecessor.