What's behind long Green Card wait time for India? An official explains

The long wait for green cards for people from India, China and other countries is mainly due to the country-based quota system, a senior official said as per news agency PTI. Its allocation can be changed only by the US Congress, the official added. A Green Card- Permanent Resident Card- is issued to immigrants to the US as evidence that they have been granted the permission of residing permanently in the country. Every country has limits on the issuance of green cards to individuals. US immigration law provides for approximately 140,000 employment-based green cards to be issued each year- of which only seven per can go to individuals from a single country.