Reads to some (myself included) as a threat to pack the court:

The Supreme Court is not well. And the people know it. Perhaps the Court can heal itself before the public demands it be “restructured in order to reduce the influence of politics.” Particularly on the urgent issue of gun control, a nation desperately needs it to heal.

https://www.whitehouse.senate.gov/imo/media/doc/New%20York%20Rifle%20&%20Pistol%20Association%20v.%20New%20York%20(Whitehouse%20amicus%20FINAL).pdf.pdf)