Pretty sure licensure is a state jurisdiction and not federal, so don’t hold your breath on Congress intervening (even if they were a more organized bunch). It’s up to professionals to get their own act together – and it seems from the comments here and on ASLA’s website that there are enough people who have little or no interest in a common nominal. As Alan mentions above, if another set of initials is recognized by practitioners (and particularly clients) it’ll be hard to change.
Congrats, and welcome to the club. I normally don’t use initials after my name – my email has my title ‘landscape architect’, but I’ve left it off my business card. I figure anyone who needs to know if I have the necessary paperwork will ask, and most should know by job title anyway.
It gets a little hard to decide what post-nominals should sit behind the name (PLA, EIT, CDT, LEED, CLARB, ASLA, A.M. ASCE, Assoc. AIA…) and at some point it looks like fluff.
Fun problem to have I suppose, especially when you just got the stamp/seal.