Summary
Merrick Garland’s failure to swiftly prosecute Trump for inciting the January 6th insurrection allowed Trump to run for president again in 2024.
Garland’s slow-walking of the investigation undermined the seriousness of Trump’s actions and normalized him as a Republican front-runner.
Garland’s inaction contributed to the current state of the republic, where Trump is poised to return to the White House.
Garland was the biggest mistake Biden made.
I can think of a few that are bigger. But it’s up there.