[somerandomness]

Actually it says the 20,000 is only for Master/PhDs, so this could reduce the total number of H1Bs issued if there are fewer than 20,000 Master/PhD applicants. Otherwise the effect is more Master/PhD H1Bs and fewer others.

[sh33mp]

The 20,000 for advanced degree holders already holds in the current system, and it already over-subscribed. So this would not reduce the number of H-1Bs issued.