Why is immigrant petitions is faster than US citizens petition?

Immigrant petitions, particularly those for employment-based visas, can sometimes be processed faster than petitions from U.S. citizens due to the specific visa categories and quotas that prioritize certain skills and occupations. Additionally, U.S. citizens often face longer processing times for family-based petitions due to high demand and limited annual caps on these visas. The streamlined nature of employment-based petitions and the ability to expedite certain cases can contribute to quicker processing times compared to family-based applications from citizens.