While the DOJ may have been able to grant access earlier, Sen. Warner has already confirmed that the department was willing to share as much information as it could months ago. This move by the Biden admin. shows that, unlike his predecessor, the president and his attorney general believe in executive branch transparency and respect for Congressional oversight.
While a welcome move, this hardly attests to Biden's transparency. The more likely reason behind this sudden U-turn is that it could be an attempt to distract from new revelations regarding how the Mar-a-Lago raid was conducted. According to America First Legal, the Biden admin. made a "special access request" to the DOJ to send FBI agents storming into Trump's estate, suggesting that it was, and still is, a politically motivated witch hunt.