Yes, it's possible to chip away at the value of a profession, laws that allow "peers accredited by other countries" to do, say, radiology over the internet from Chennai.
But the professional organizations double as unions of a sort. They are dedicated to protecting the public, not their members. (Most frequent question at the professional engineer's association where I live, "What do I get for my dues?" A: "Nothing. We require you to pay them so we can protect the public from bad engineers.")...but in the case of diluting a profession with lower-quality competition, that's the same thing.
So, hell yes, you already see the AMA working against having immigrant doctors certified without passing the same difficulty of tests and practice-time.
What if there were a "Professional Information Technologists Association of California" (and 49 other states) pressing legislators for laws that required these new-hires to pass a few hard tests and prove their experience before getting certification to take those jobs?
There's *NOBODY* pushing for that law now. It takes organization, planning, money. Putting that organization together would be about 10% of the stuff that a real professional organization would do for you.