How has the court treated the issue of consent to exclude evidence that supports a confession made by a police officer?

The court's finding on this issue is controlling and we need not reach the question on whether conceding, arguendo, the invalidity of the confession, the evidence should have been excluded. Moreover, we observe that the seizure was pursuant to appellant's consent, and it would seem that the exclusion of the evidence would in no way serve ". . . to deter future unlawful police conduct." United States v. Janis, --- U.S. ----, 96 S.Ct. 3021, 49 L.Ed.2d --- (1976); United States v. Peltier, 422 U.S. 531, 536-539, 95 S.Ct. 2313, 45 L.Ed.2d 374 (1975); United States v. Calandra, 414 U.S. 338, 347, 94 S.Ct. 613, 38 L.Ed.2d 561 (1974).