Rule 4 rules of criminal procedure https://www.law.cornell.edu/rules/frcrmp/rule_4 federal rules Rule 4 rules of criminal procedure Rule 4 https://www.law.cornell.edu/rules/frcrmp/rule_4 Rule 4 governs arrest warrants and summons on a complaint Fed. R. Crim. P. 4 Rule 4 legal requirements Fed. R. of Crim. Proc. Rule 4 Rule 4 federal rules Fed. R. Crim. P. 4