This Court previously has recognized — even with respect to another statute the legislative history of which indicated that courts were to have “wide discretion exercising their equitable powers,” 118 Cong. Rec. 7168 (1972), quoted in Albemarle Paper Co. v. Moody, 422 U. S. 405, 421 (1975) — that “discretionary choices are not left to a court’s ‘inclination, but to its judgment; and its judgment is to be guided by sound legal principles.’” Id., at 416, quoting United States v. Burr, 25 F. Cas. 30, 35 (No. 14,692d) (CC Va. 1807) (Marshall, C. J.). Thus, a decision calling for the exercise of judicial discretion “hardly means that it is unfettered by meaningful standards or shielded from thorough appellate review.” Albemarle Paper Co., 422 U. S., at 416.
Whether discretion has been abused depends, of course, on the bounds of that discretion and the principles that guide its exercise. Had Congress merely committed the choice of remedy to the discretion of district courts, without specifying factors to be considered, a district court would be expected to consider “all relevant public and private interest factors,” and to balance those factors reasonably. Piper Aircraft Co. v. Reyno, 454 U. S. 235, 257 (1981). Appellate review of that determination necessarily would be limited, with the absence of legislatively identified standards or priorities.
In the Speedy Trial Act, however, Congress specifically and clearly instructed that courts “shall consider, among others, each of the following factors,” § 3162(a)(2) (emphasis added), and thereby put in place meaningful standards to guide appellate review. Although the role of an appellate court is not to substitute its judgment for that of the trial court, review must serve to ensure that the purposes of the Act and the legislative compromise it reflects are given effect. Where, as here, Congress has declared that a decision will be governed by consideration of particular factors, a district court must carefully consider those factors as applied to the particular case and, whatever its decision, clearly articulate their effect in order to permit meaningful appellate re