Guilds still exist and wield considerable power. See the the American Bar Association or American Medical Association.
https://www.baltimoresun.com/news/bs-xpm-1997-03-01-19970600...
> "The United States is on the verge of a serious oversupply of physicians," the AMA and five other medical groups said in a joint statement. "The current rate of physician supply -- the number of physicians entering the work force each year -- is clearly excessive."
> Cohen said federal money should "no longer be used to support the training of foreign nationals."
And it seems the actual focus is on whether to fund foreign students.