A U.S. senator has suggested that four federal judicial nominees were coached to sidestep his question asking whether the U.S. Supreme Court's 65-year-old landmark decision Brown v. Board of Education was correctly decided.

Judicial nominees Steven Grimberg, Ada Brown, David Novak and Matthew Solomson all gave nearly identical answers to the question posed by Sen. Richard Blumenthal, D-Connecticut, during their Senate Judiciary Committee hearing Tuesday morning. Blumenthal called Brown “one of the pillars of our jurisprudence … that is ingrained in our law.”

Grimberg is nominated for a seat in the Northern District of Georgia. Brown is a candidate for the Northern District of Texas, and Novak is a nominee to the Eastern District of Virginia. Matthew Solomson is nominated to the U.S. Court of Federal Claims in Washington.

Brown, an African American woman, told the Senate panel that she benefited personally from the decision, which struck down the concept of “separate but equal” segregation in 1954. Novak, who told the panel he has Hispanic children, acknowledged that they, too, were the beneficiaries of Brown and that Blumenthal “could obviously tell what I feel.”

Grimberg called the concept of equality under law “a bedrock of our country,” and Solomson said it was “obviously one of the most important cases” in the Supreme Court pantheon.

But all four nominees claimed that to give a thumbs up or a thumbs down to whether the Supreme Court correctly decided Brown would violate the federal judiciary's code of conduct. The candidates specifically referenced Canon 3(A)(6), which states in part: “A judge should not make public comment on the merits of a matter pending or impending in any court.” The canon also holds that the prohibition of “public comment on the merits does not extend to public statements made in the course of the judge's official duties, to explanations or court procedures, or to scholarly presentations.”

“You obviously have been instructed as to how to answer this question,” Blumenthal said after all four candidates demurred. “There is more than enough latitude under that canon to say, 'Yes, I believe Brown v. Board of Education was correctly decided.'”

Blumenthal said that, while he welcomed expressions of support for Brown's ultimate intent by the nominees, their collective response “falls short in my view.”

It is not the first time that federal judicial nominees put forth by the Trump White House have been challenged by Blumenthal on Brown.

Earlier this month, Wendy Vitter, nominated for a seat on the U.S. District Court for the Eastern District of Louisiana, testified in response to the same question: “I think I can get into a difficult, difficult area when I start commenting on Supreme Court decisions—which are correctly decided and which I may disagree with.”

She later added that the ruling, as Supreme Court precedent, is binding and for that reason, “Of course, I would uphold it.”

Neomi Rao, nominated to replace newly minted U.S. Supreme Court Justice Brett Kavanaugh on the U.S. Court of Appeals for the District of Columbia, said at her confirmation hearing that it was “not appropriate” to comment, although she acknowledged Brown is “a really important precedent.” Rao was confirmed by the Senate last month and is slated to sit for her first hearing later this week.

Last year, Blumenthal repeatedly pressed then Supreme Court nominee Neil Gorsuch about Brown. Gorsuch twice said that Brown was “a correct application of the law of precedent.”

U.S. deputy attorney general nominee Jeffrey Rosen also wouldn't say he specifically supported Brown during his hearing earlier this month. Instead, Rosen suggested that answering the question “wouldn't be a productive exercise,” according to The Daily Beast.

On Tuesday, Sen. John Cornyn, R-Texas—a former Texas Supreme Court justice who chaired the hearing—and Sen. John Kennedy, R-Louisiana, followed up on Blumenthal's focus on Brown by posing a somewhat different question to the nominees.

Cornyn asked whether they recognized Brown as “controlling precedent” that they would follow if confirmed. “Faithfully,” said Brown. “Absolutely, it's the rule of law,” Grimberg replied. “Absolutely,” Novak said.

Kennedy then asked each of the candidates to “raise your hand if you believe that racially separate but equal schools are moral in America?” No one raised their hand.

The Louisiana senator then asked, “Can we agree … that racially separate schools are inherently moral and illegal?” The nominees responded with a chorus of “yes.”

But Blumenthal was not assuaged. As Cornyn moved to adjourn the hearing, Blumenthal interrupted to read into the record the judicial ethics canon each nominee cited when declining to answer whether the Supreme Court decided Brown correctly.

“The admonition against public comment about the merits of a pending or impending matter continues until the appellate process is complete,” he said. “I know of no pending or impending matter before any of your courts involving Brown v. Board of Education.”