The exclusionary rule is a legal principle in the United States, under constitutional law, which holds that evidence collected or analyzed in violation of the defendant's constitutional rights is sometimes inadmissible for a criminal prosecution in a court of law.
Freelance interpreters charge anywhere between $15- $60 per hour, depending on skill and demand for interpreters. Staff interpreters at schools make anywhere from minimum wage to $35,000 per year.
The Bureau of Labor Statistics estimates that interpreters, including those for sign language, earned almost $51,000 per year in 2011. But this figure accounts for all interpreters and translators. American Sign Language interpreters earn closer to $39,000, or $18.85 per hour, according to Bridgerland Applied Technology College.