WASHINGTON — Democratic senators cited concerns yesterday about political meddling and policies likened to racial and ethnic profiling in urging Attorney General Mukasey to ensure the Justice Department abides by the laws it is supposed to enforce.

“I wish you were more focused on restoring the department’s role as protector of the rule of law,” The Senate Judiciary Committee chairman, Patrick Leahy, a Democrat of Vermont, told Mr. Mukasey at the end of nearly three hours of testimony. “Instead, you seem content to serve as a caretaker for the regime of excessive executive power established by the Bush administration.”

Mr. Mukasey, eight months into his tenure as President Bush’s third attorney general, said he is doing all he can to make sure that the once fiercely independent department recovers from months of scandal last year.

“It is equally crucial that the American people have complete confidence in the propriety of what we do,” Mr. Mukasey said.

Republicans on the Senate panel largely left Mr. Mukasey unscathed. But front and center on Democrats’ minds was a recent Justice Department report that concluded politics improperly, and perhaps illegally, played a part in the 2006 hirings of newly graduated career attorneys and summer law interns. Liberal-leaning or Democratic law students with sterling credentials were passed over for the jobs in some cases, while Republican applicants with less impressive resumes were hired, the report showed.

Mr. Mukasey was nominated as attorney general last September — nearly a year after the problematic hirings that led, in part, to charges of a politicized Justice Department and triggered the resignation of former Attorney General Gonzales.