Joe Biden pardoned his son Hunter after promising that he would not and issued preemptive pardons for his relatives and members of Congress who were potential targets of the incoming Donald Trump administration.

Trump, on the first day of his new term, pardoned and commuted sentences for people charged in the Jan. 6, 2021, riot at the U.S. Capitol, including those charged with assaults that left more than 100 police officers injured.

But there was no pardon for former Alabama Gov. Don Siegelman, who served six-and-a-half years in prison on a federal bribery charge and has claimed innocence since the 2006 conviction.

Biden denied a request to pardon Siegelman, Alabama’s last Democratic governor, on Jan. 20, his last day in office.

See also: Timeline of Don Siegelman case

John J. Farmer Jr., a former New Jersey attorney general and a law professor at Rutgers University, wrote in an op-ed in The Hill that the Biden’s denial of Siegelman’s pardon while granting pardons to relatives and allies, along with Trump’s clemency for the violent rioters, showed a disregard for the law and equal justice by both presidents.

“Biden’s denial of mercy to Siegelman, considered in light of the pardons he did grant from sheer nepotism and perhaps fear of legal harm to himself, lays bare his affront to the rule of law and the lasting stain on his presidency,” Farmer wrote.

“Trump’s blanket clemency for violent rioters who tried to disrupt the orderly transition of power — a literal assault on our democracy — broadens the context still further. To allow Siegelman’s conviction to remain unaddressed in light of those pardons would be to mock any notion of equal justice under law.”

Siegelman deferred questions about the denial of the pardon to Farmer. Siegelman said Farmer’s op-ed was unsolicited.

Former President Barack Obama also denied Siegelman’s request for a pardon at the end of Obama’s term in 2017.

In 2006, a federal jury convicted Siegelman of bribery for appointing HealthSouth Founder Richard Scrushy to a a state hospital regulatory board in exchange for $500,000 in donations to a campaign to establish an education lottery.

Siegelman had personally guaranteed the lottery campaign’s debt.

Siegelman, who was out on appeal for some time after his conviction, was released from prison in 2017.

Farmer was one of more than 100 former attorneys general who supported Siegelman’s appeal of his conviction in 2012, saying they believed it set a precedent for politically motivated prosecutors to criminalize campaign fundraising.

Siegelman was elected governor in 1998 and narrowly lost to Republican Bob Riley in his bid for re-election in 2002.