What is the test for a motion to dismiss an indictment for a violation of the Double Jeopardy Clause de novo?

We review the denial by the district court of a motion to dismiss an indictment for a violation of the Double Jeopardy Clause de novo. United States v. Meza-Soria, 935 F.2d 166, 167 (9th Cir.1991); United States v. Schwartz, 785 F.2d 673, 676 (9th Cir.1986), cert. denied, 479 U.S. 890 (1986) The factual findings regarding the governmental conduct upon which the denial is based are reviewed for clear error. United States v. Lun, 944 F.2d 642, 644 (9th Cir.1991); United States v. Mitchell, 736 F.2d 1299, 1304 (9th Cir.1984), cert. denied, 474 U.S. 830 (1985).