There is no "Bar Association." There are 50 different state bars with different rules. The largest legal jurisdiction, New York, requires only one year of law school. California, the third largest, does not require a law degree at all. Interestingly enough, California and New York are the two states with the highest rates for legal services. (Though obviously it's not a cause-and-effect relationship.)

There is an American Bar Association, but it does not regulate licensing. It regulates accreditation of law schools, but it was sued by the DOJ in the 1970s for antitrust violations. Unlike the AMA, it has aggressively accredited new law schools. Since 1970, the cumulative number of JDs granted over the previous 35-year period increased by 3.5x, while the number of employed attorneys increased by 2x: https://www.mybudget360.com/wp-content/uploads/2012/01/35-ye....