nulity

Basically any amount ordered over the maximum garnishment amount 50% of pay under Louisiana law / 50-65% under Federal law should be a nulity.

Men’s Rights Myth: Typical Child Support Payments Are Insanely High 2006

I trust I have shown that the act of Congress, so far as it confers the right of appointment in this case upon the President, is a nulity, on account of its conflict with the Constitution, and it follows as a necessary consequence that any regulation of your Department carrying into execution that which is void, is also unauthoritative.

Correspondence Between Governor Brown and the Secretary of War, Upon the Right of The Georgia Volunteers, In Confederate Service, To Elect Their Own Officers. 16 p. 1857-1865: Brown 1863