Maryland 's law allows police to take genetic samples from those arrested . A lower - court ruling against a criminal defendant is put on hold . Chief Justice Roberts said there is a ` ` fair prospect '' the high court will uphold the law .
Maryland 's law allows police to collect genetic material from those arrested . A lower-court ruling favoring a criminal defendant is put on hold . Chief Justice Roberts says there is a `` fair prospect '' the high court will uphold the law .