From 1996 there have been critical changes in the uniform laws addressing both interstate child support and interstate custody and visitation issues. Perhaps one of the most critical laws that every family law attorney must know: the Uniform Interstate Family Support Act (UIFSA), now enacted in all jurisdictions — 755 ILCS 22/100 et. seq.; and the Full Faith and Credit for Child Support Orders Act (FFCCSOA). The most important of these Acts for the family lawyer to know as to jurisdictional issues is the UIFSA, which has been comprehensively amended in 2001 and again in 2008 (with the 2008 amendments comporting with requirements of the Hague Convention on the International Recovery of Child Support and Other Forms of Family Maintenance). This article provides a primer regarding the current version of UIFSA now finally the same Uniform law in all of the States.