28 CFR Part 21

7 sections.

§ 21.1
§ 21.1 Definitions.
§ 21.2
§ 21.2 Employees of the United States serving as witnesses.
§ 21.3
§ 21.3 Aliens.
§ 21.4
§ 21.4 Fees and allowances of fact witnesses.
§ 21.5
§ 21.5 Use of table of distances.
§ 21.6
§ 21.6 Proceedings
§ 21.7
§ 21.7 Certification of witness attendance.

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.