Yes. Restitution can be collected by the Government after your sentence expires as any other civil judgment, but it is not necessary for the Government to initiate a separate legal action (18 USC Section 3613).
Joshua Sabert Lowther, Esq.
NATIONAL FEDERAL DEFENSE GROUP
If the Federal Government obtains an ordinary civil judgment, wages cannot be garnished in South Carolina. Wage garnishment is not available in South Carolina to collect civil judgments. However, there are some debts for which garnishment is available, such as child support obligations and federal taxes. I do not know if the debt associated with you criminal case provides for wage garnishment or if it would result in a civil judgment.