Covered visa applicants will be required to post a bond of up to $15,000, but the State Department gave consular officers three options for bond amounts: $5,000, $10,000, and $15,000. Consular officers can determine the exact amount of the bond “based upon the applicant’s circumstances.”

DHS says it costs more than $17,000 to detain and deport each foreign tourist who doesn't leave, so they're requiring some to post bond before coming.