WaPo:

Similarly, Holder said that voter identification laws that have been enacted in a number of states across the country threaten to make it harder for minorities to exercise their rights at the polls. Proponents of the measures say they are intended to combat voter fraud, a problem that Holder has dismissed as virtually nonexistent.

“Rather than addressing a supposedly widespread problem, these policies disproportionately disenfranchise African Americans, Hispanics and other communities of color,” he said.