Is there a difference, if any, between as is, as it stands, as it is?
The FreeDictionary states the following:
as it stands: as something is now, without changes to it
The law as it stands is very unclear.
as is:exactly as something is without any changes or improvements made to it.
I'll have to hand this report in as is - there's no time to update it.
Obviously, they are interchangeable or the synonymous phrases. Maybe a small difference lies in a style of speech (formal/more informal speech).
As it is looks way synonymous here as well (already, actually), but sometimes it is rather informal or spoken, imho.