It's not the hormones that make US beef juicy - it's the grain feeding that is given at the last phase of the growing process to fatten up the beef and make it tender before they are slaughtered.

The chlorine is in our US water and saves lives.  If extra chlorine is used in washing chickens, it doesn't absorb.   You'd get no more chlorine in your body from eating US chicken than from a swim in a public pool.