Estimated amount that undocumented immigrants in the U.S. contribute each year to state and local tax coffers: $11.64 billion

Portion of that total which goes to sales and excise taxes: $6.9 billion

To property taxes: $3.6 billion

To personal income taxes: almost $1.1 billion

Estimated percent of undocumented immigrant households that file income tax returns using Individual Tax Identification Numbers, with many others having taxes deducted from their paychecks: at least 50

Percent of their income undocumented immigrants pay on average in state and local taxes: 8

Percent the richest 1 percent of Americans pay: 5.4

If undocumented immigrants were granted full legal status, amount by which their annual state and local tax contributions would increase nationwide: $2.1 billion

In the South*: over $586 million

Percent of the gain that would come from the personal income tax, due to both increased earnings resulting from legal status and full compliance with the tax code: 50

If President Obama's executive actions on immigration were fully implemented, giving millions temporary relief from deportation and work permits, amount by which the annual state and local tax contributions of undocumented immigrants would increase nationwide: $805 million

In the South: over $215 million

Date on which the U.S. Supreme Court will hear arguments in a case brought by 26 states and the U.S. House challenging those executive actions: 4/18/2016

* Facing South counts among the Southern states Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas, Virginia and West Virginia.

(Click on figure to go to source. Most of the numbers in this index are from the Institute on Taxation and Economic Policy's 2016 report, "Undocumented Immigrants' State & Local Tax Contributions.")