Rule 46(a)(1), federal law has unequivocally provided that a person arrested for a noncapital offense shall be admitted to bail. This traditional right to freedom before conviction permits the unhampered preparation of a defense, and serves to prevent the infliction of punishment prior to conviction. See Hudson v. Parker, 156 U. S. 277, 156 U. S. 285 (1895). Unless this right to bail before trial is preserved, the presumption of innocence, secured only after centuries of struggle, would lose its meaning.
The right to release before trial is conditioned upon the accused's giving adequate assurance that he will stand trial and submit to sentence if found guilty. 34 U. S. 710 (1835). Like the ancient practice of securing the oaths of responsible persons to stand as sureties for the accused, the modern practice of requiring a bail bond or the deposit of a sum of money subject to forfeiture serves as additional assurance of the presence of an accused. Bail set at a figure higher than an amount reasonably calculated to fulfill this purpose is 'excessive' under the Eighth Amendment. See United States v. Motlow,10 F.2d 657 (1926, opinion by Mr. Justice Butler as ...