Biden could approach and pay respects, but WAS NOT allowed to 'lay' the wreathe
For comparison, here are past presidents, actually elected and recognized by the US military as their commander in chief. Wreathe is presented for the POTUS to lay, rather than already there to begin with.
Here's Trump
And Obama
And Bush
And Clinton
And Reagan
Only Biden was denied the laying. Could approach and pay respects, but not lay it. Aligns with being a foreign dignitary rather than the POTUS.
You'd think he'd know the protocol, but lots of new presidents who never served screw up protocol. Could be dementia, could be he's playing up what it looks like to idiot viewers who don't know better.
how many screw up's or coincidences until ...etc...