Due to the per-country-quota limits, people immigrating from populous countries are stuck in multi-decade green card backlogs. Immigrants crossing the southern

Due to the per-country-quota limits, people immigrating from populous countries are stuck in multi-decade green card backlogs. Immigrants crossing the southern border from smaller countries might be going through the same process, but the per-country-quotas ensure that most of them will get their green cards much sooner than legal immigrants from populous countries.