28 CFR §51.59

1. (a)Relevant factors. In determining whether a submitted redistricting plan has a prohibited purpose or effect the Attorney General, in addition to the factors described above, will consider the following factors (among others):
   1. (1)The extent to which malapportioned districts deny or abridge the right to vote of minority citizens;
   2. (2)The extent to which minority voting strength is reduced by the proposed redistricting;
   3. (3)The extent to which minority concentrations are fragmented among different districts;
   4. (4)The extent to which minorities are over concentrated in one or more districts;
   5. (5)The extent to which available alternative plans satisfying the jurisdiction's legitimate governmental interests were considered;
   6. (6)The extent to which the plan departs from objective redistricting criteria set by the submitting jurisdiction, ignores other relevant factors such as compactness and contiguity, or displays a configuration that inexplicably disregards available natural or artificial boundaries; and
   7. (7)The extent to which the plan is inconsistent with the jurisdiction's stated redistricting standards.
2. (b)Discriminatory purpose. A jurisdiction's failure to adopt the maximum possible number of majority-minority districts may not be the sole basis for determining that a jurisdiction was motivated by a discriminatory purpose.