The incorrect payments are believed to be a result of a common tax-filing glitch, specifically with foreign college students on F-1 and J-1 exchange visas.
'This endeavor appears to be part of a scheme motivated by an unconstitutional discriminatory purpose to dilute the political power of communities of color.'
Immigrants rights groups are trying to block an executive order from President Donald Trump aimed at determining the numbers of citizens and non-citizens in the country.