The state is supposed to contact people whose data does not match, but the process is too tilted against voters.
His policy was not well received by White people in the South and led to violence and intimidation against black voters.
But it has managed to find the time to sue a group of black political leaders in Mississippi for discriminating against white voters.
Vestigial legal discrimination against Indigenous voters was removed in the 1960s.
Sanchez, in turn, accused Brown of playing the race card against Hispanic voters.
All came this year, and the first accused a majority-black district in Mississippi of discriminating against white voters.
Democrats have argued that most challenges were against legal voters, including some in the military.
He said he believed that the government was retaliating against voters who had supported his party in the election.
Furthermore, there are reports of political pressure against voters, coercing them to take part in rallies and campaign events.
The observers were sent as part of a 1999 court order after allegations of discrimination against Hispanic voters.