规则是：
The Department of State has determined the Family and Employment preference numerical limits for FY-2010 in accordance with the terms of Section 201 of the INA. These numerical limitations for FY-2010 are as follows:
Worldwide Family-Sponsored preference limit: 226,000
Worldwide Employment-Based preference limit: 150,667
Under INA Section 202(A), the per-country limit is fixed at 7% of the family and employment annual limits. For FY-2010 the per-country limit is 26,367. The dependent area annual limit is 2%, or 7,533.