Article 1 of the Federal Rules of Evidence covers the scope of the rules, their purpose, definitions, questions the court needs to ask before the admission or arguments about evidence, etc.
XXX.
101(a) Scope of the Rules
The Rules apply to US court proceedings.
Specific courts are set out in R 1101:
District courts
Bankruptcy courts
Appeals courts
Federal claims courts
District courts of Guam, Virgin Islands, and the Northern Mariana Islands
Lady Scrivener 