34 CFR §34.19

1. (a)
   1. (1)After an employer receives a garnishment order we issue, the employer must deduct from all disposable pay of the debtor during each pay period the amount directed in the garnishment order unless this section or § 34.20 requires a smaller amount to be withheld.
   2. (2)The amount specified in the garnishment order does not apply if other law, including this section, requires the employer to withhold a smaller amount.
2. (b)The employer must comply with our garnishment order by withholding the lesser of—
   1. (1)The amount directed in the garnishment order; or—
   2. (2)The amount specified in 15 U.S.C. 1673(a)(2) (Restriction on Garnishment); that is, the amount by which a debtor's disposable pay exceeds an amount equal to 30 times the minimum wage. (See 29 CFR 870.10.)