US Supreme Court, Mike Stanton v. Drendolyn Sims (2013)
“ Thus, despite our emphasis in Welsh on the fact that the crime at issue was minor—indeed, a mere nonjailable civil offense—nothing in the opinion establishes that the seriousness of the crime is equally important in cases of hot pursuit. Third, even in the portion of Welsh cited by the Ninth Circuit below, our opinion is equivocal: We held not that warrantless entry to arrest a misdemeanant is never justified, but only that such entry should be rare. ”
