Here is a collection of useful links to the U.S. Citizenship & Immigration Services and the Department of State web sites:
U.S. Citizenship and Immigration Services:
http://www.uscis.govU.S. Dept of State:
http://www.travel.state.gov/visa/visa_1750.htmlUS Department of Labor (DOL) Processing Times (PERMs, Prevailing Wage Determinations):
http://icert.doleta.govDOL PERM Employer Website:
http://www.plc.doleta.govU.S. Customs & Border Protection (CBP) (laws & procedures regarding being admitted to the United States):
http://www.cbp.gov