What would you do if you found out Biden smoked weed? Could he be impeached? Would he care?

Who cares?  Most people smoke/smoked weed nowadays (it's becoming legal right and left).
........ Although it would explain the funny way he talks.

It's hardly a "High Crime or Misdemeanor" - unlike insurrection. And the Dems actually gained a Senate seat, if the GA run-off returns the incumbent, they won't need the Veep's tiebreaker vote. The Senate will NOT convict for something so trivial.

I wouldn’t care.  It wouldn’t change my opinion of his job performance up or down.

I would send him a sample pack of my wares. But I would change the names of my strains to give him a blast from his past like "Corn Pop" from his lifeguard days and "Amtrak Express" from his senator days. Being the dealer of a US president would look real good on my resume and it would elevate my status in the VIP section at the Rod and Gun tavern in Parksville. Cheers!

Nothing

Nothing.  I wouldn't really care and I fear that America will not be better in any way since "impeach" has become part of average people's daily language. 

There goes the theory that cannabis use may prevent dementia. 

;)

It certainly would explain somethings he says. 

But I think dementia is the actual reason.