https://www.mercurynews.com/2019/09/19/h-1b-bill-to-scrap-per-country-green-card-limits-blocked-in-senate-report-says/

One of two bills that would eliminate the per-country cap on green cards has been blocked in the U.S. Senate, according to a report Thursday.

The annual 7 percent cap on green cards for citizens of any one country has led to waits of many years for foreign nationals working in the U.S. on the H-1B visa and seeking permanent residency, with citizens of India waiting the longest because they dominate the H-1B system.