continue:
2 Citizens and permanent residents' spouses or minor children (under 18 years old) will not wait for waiting period.If citizens and permanent resident handle the immigration for spouses or minor children,they can go to USA soon.
3 Citizen or permanent resident handle Family-based immigration for their spouse and minor children, if conform these condition can be reduced the financial guarantees more:
a. Citizen or permanent resident's spouse, have married over 2 years.
b. Citizen or permanent resident's minor children under 16 years of age.
4 U.S. citizens or permanent residents (must over 18 years of age, and have enough financial support) can handle Family-based immigration for their father and mother.