Washington — President Donald Trump is not seeking to “micromanage” the FBI’s investigation of sexual-misconduct allegations against Supreme Court nominee Brett Kavanaugh, the White House press secretary said on Sunday.

Democrats raised concerns that important lines of inquiry were off limits to investigators.

The scope of the reopened background check, already limited to one week, has become the latest flashpoint in the highly fraught political contest between supporters and opponents of confirming Kavanaugh, a 53-year-old federal appellate judge, to a lifetime appointment to the nation’s highest court.

While the president had to authorize the FBI to act on Friday, and did so only under pressure from several wavering Republican senators, the White House made a point of saying that the Senate — whose Republican leadership has shown near-total fealty to Trump — is responsible for oversight.

“The White House isn’t intervening,” press secretary Sarah Huckabee Sanders said on Fox News Sunday. “We’re not micromanaging this process. It’s a Senate process. It has been from the beginning, and we’re letting the Senate continue to dictate what the terms look like.”

White House counselor Kellyanne Conway, on CNN’s State of the Union, said the reopened investigation was “not meant to be a fishing expedition.” But Conway, who said without detail that she, too, was a victim of a sexual assault, avoided a flat denial that White House counsel Donald McGahn had sought to put any particular interviews out of bounds.

“I don’t think Don McGahn would do that, but I’ve not talked with him about it,” she said.

McGahn, a friend of Kavanaugh’s, has shepherded him through the Senate confirmation process for the White House and has been coordinating with Senate Majority Leader Mitch McConnell, R-Ky. Kavanaugh’s nomination, seemingly on track for Senate endorsement, was thrown into doubt two weeks ago after Christine Blasey Ford, a Northern California research psychologist, went public with her allegation that he had sexually assaulted her when they were both in high school. In July she initially told two Democratic California lawmakers — Rep. Anna Eshoo and Sen. Dianne Feinstein — on the condition that she not be publicly identified.

After Ford and Kavanaugh testified Thursday before the Senate Judiciary Committee — with Ford providing an emotional but composed account of the alleged assault and Kavanaugh responding with a furious denial and attacks on Feinstein and other committee Democrats — the White House and Senate Republican leaders reluctantly agreed to a limited re-examination given the uncertainty of the confirmation vote.

As news media on Saturday reported that agents were being told to refrain from pursuing certain leads and potential witnesses, Trump said the FBI has “free rein” to investigate as it sees fit. The White House has said the investigation should encompass “current credible allegations” and be completed by the end of the week. The seeming ambiguity about the investigation’s ground rules puts new pressure on Sen. Jeff Flake, the Arizona Republican and key swing vote on the Judiciary Committee whose last-minute insistence led to the FBI inquiry.

He was supported by moderate Republican Sens. Lisa Murkowski, of Alaska, and Susan Collins, of Maine, who are not members of the Judiciary Committee. Both are undecided on Kavanaugh’s confirmation, and their support is considered essential given Republicans’ narrow 51-49 majority in the Senate.

Sen. Amy Klobuchar, a Minnesota Democrat whose questioning of Kavanaugh led to one of the most striking and tense exchanges of Thursday’s hearing, said his response left unanswered whether his memory of events had ever been impaired by heavy drinking.

During the hearing, Klobuchar, who had just related her father’s struggles with alcoholism, asked Kavanaugh whether he had ever had a “blackout” from drinking too much, and he twice answered with a combative “Have you?” Later, he apologized.

Klobuchar and other Democrats said her question was relevant because Ford — like the other two accusers — had described him as being highly inebriated at the time of the alleged assault, which might have left him unable to recall accurately whether it took place.

“I think it’s really important that the FBI get to the bottom of the evidence here,” Klobuchar said in a separate interview on CBS.

The New York Times reported that former classmates who have talked about Kavanaugh’s heavy drinking were left off the list of those the FBI planned to interview. The paper cited two people “familiar with the matter” as saying that the FBI would question four potential witnesses concerning the attack Ford alleges, and seek permission from the White House if those interviews argue for further checking.

Sen. Lindsey Graham, of South Carolina, the Republican who has been perhaps Kavanaugh’s strongest champion on the committee, suggested there was no reason for investigators to pursue the subject of the judge’s drinking habits through interviews with college or high-school classmates.

“He’s had six FBI background checks,” Graham said on ABC, referring to routine investigations dating to the 1990s for Kavanaugh’s past appointments to lower-level federal offices.

Kavanaugh was not “a stumbling, bumbling drunk,” Graham said.

Graham also said constraints on the scope of the FBI investigation were not the doing of the White House, but rather of the moderate Republican senators who called for the reopened background check.

“I know that Senators Flake, Collins and Murkowski wanted a limited review,” he said in the ABC interview.

However, Sen. Mazie Hirono, a Hawaii Democrat on the Judiciary Committee, called on the three Republicans to use their leverage to assure that the background check would be sufficiently thorough.

“The question is, are we going to get the kind of investigation that is thorough and fair?” she said in an interview on ABC.