<p>Starbucks is opening a branch in Washington, DC in which every worker has to be proficient in American Sign Language. The coffee house will be close to Gallaudet University, the world's only liberal arts institution of higher learning for the hearing impaired. Starbucks says at least 20 deaf and hard-of-hearing employees will be hired for the &quot;signing store&quot; location. All employees who have hearing will be required to become fluent in American Sign Language. The coffee h...</p>