This study is one of the first to estimate the total impact of illegal immigration on the federal budget. Most previous studies have focused on the state and local level and have examined only costs or tax payments, but not both. Based on Census Bureau data, this study finds that, when all taxes paid (direct and indirect) and all costs are considered, illegal households created a net fiscal deficit at the federal level of more than $10 billion in 2002. We also estimate that, if there was an amnesty for illegal aliens, the net fiscal deficit would grow to nearly $29 billion. Read more...