Numbers

300 Undocumented workers rounded up by federal officials during Operation Rollback at 61 Wal-Mart stores in 21 states

$2 Daily wage earned by the lowest paid of these janitors, illegal immigrants from Eastern Europe, Central America and Asia

370,000 Estimated number of mentally ill people currently in U.S. prisons, nearly 1 of 5 inmates

80,000 Patients in mental hospitals in the U.S.

$4,694 Average tuition at a four-year public university, up 14% from last year

$2,535 Average tuition a decade ago

1 in 280,000 Probability of being hit by lightning in a year

2 Number of people on the set of Mel Gibson's movie The Passion of Christ who were struck by lightning during five months of shooting. Actor Jim Caviezel, who plays Jesus, was hit once; assistant director Jan Michelini was struck twice

Sources: Wall Street Journal; Human Rights Watch; The College Board; Vaisala Group, Rogers & Cowan