On the contrary Mantis, the article says the exact opposite.
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The technology raises legal and privacy issues because the U.S. Supreme Court has said officers generally cannot use high-tech sensors to tell them about the inside of a person's house without first obtaining a search warrant.
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the Marshals Service "routinely pursues and arrests violent offenders based on pre-established probable cause in arrest warrants" for serious crimes.
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The Supreme Court ruled in 2001 that the Constitution generally bars police from scanning the outside of a house with a thermal camera unless they have a warrant, and specifically noted that the rule would apply to radar-based systems that were then being developed.
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Three judges on the federal 10th Circuit Court of Appeals upheld the search,
Emphasis mine.