Drunk driving legalized-by-proxy in Florida

[hitssquad]

Any person accused of a crime has the right to know by what means they have been found guilty of commiting one and how reliable it is.

Please clarify what you mean by what right a person has.

 

[hitssquad]

U.S. legal conviction thresholds

some reasonable doubt is permissible in an isolated case for a DUI charge

In the United States, reasonable doubt (not some reasonable doubt) is always (not sometimes) the threshold beyond which a person can be prosecuted for a crime.

 

[hitssquad]

Apparently at least some breathalyzers are not even fooled by oral feces.
http://www.newsoftheweird.com/archive/nw050529.html

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A DUI suspect (unnamed in a March Toronto Sun report) put a handful of his own feces in his mouth in a police station in what officers said was an attempt to foil a Breathalyzer test. Said an official, "I don't think alcohol alone would make you do (that)." Nonetheless, said police, the man, who had been stopped on Highway 11 near Barrie, Ontario, still registered double the threshold for impairment. [Toronto Sun, 3-30-05]
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[Moonbear]

Apparently at least some breathalyzers are not even fooled by oral feces.
http://www.newsoftheweird.com/archive/nw050529.html

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A DUI suspect (unnamed in a March Toronto Sun report) put a handful of his own feces in his mouth in a police station in what officers said was an attempt to foil a Breathalyzer test. Said an official, "I don't think alcohol alone would make you do (that)." Nonetheless, said police, the man, who had been stopped on Highway 11 near Barrie, Ontario, still registered double the threshold for impairment. [Toronto Sun, 3-30-05]
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I'd have to agree that guy had more problems than inebriation impairing his judgement.