Whether a vehicular roadblock satisfies the standard for a reasonable search and seizure under the Fourth Amendment

QUESTION PRESENTED Whether a vehicular roadblock satisfies the standard for a reasonable search and seizure under the Fourth Amendment, articulated in Brown v. Texas, 443 U.S. 47 (1979), when there is no evidence that it was planned or authorized by supervisory (non-field) officers or that the date and location of the roadblock was reasonably selected to achieve valid law enforcement goals.