Congress allows welfare
Congress allows bailouts
Congress allows for their own personal perks
Congress allows social security
Congress allows the Department of Education, Labor, Agriculture, etc.
Congress allows voter fraud
Congress allows Medicaid/Medicare
Congress allows the NEA
Congress allows taxation without representation
Do you want me to keep going with what congress allows that is in direct conflict with the Constitution?
The difference is, establishing uniform rules of naturalization is a specifically enumerated power of COngress under Article 1, Section 8.