The STOP the SWAMP Act amends federal law to penalize witnesses who refuse to answer questions or commit perjury before Congress. Specifically, anyone summoned to testify before Congress who refuses to answer relevant questions faces a misdemeanor charge with fines between $100 and $1,000, jail time of one month to one year, and permanent debarment from federal employment. The bill also applies the same employment ban to anyone convicted of perjury or making false statements under oath during congressional testimony. Additionally, Congress members can introduce joint resolutions within 180 days to rescind a witness's federal salary and expenses, with expedited procedures requiring committee review within 15 days and floor votes within 20 days. These debarments and salary rescissions would be subject to court review, and current federal employees removed under these provisions would be separated from the civil service.