Where government presented ample evidence regarding quantity of crack cocaine distributed by defendant, and defendant was responsible for totals distributed by entire conspiracy, sufficient evidence supported conviction.The 7th U.S. Circuit Court of Appeals affirmed a decision by Judge Robert M. Dow, Jr., Northern District of Illinois. John L. O’Leary IV and his co-defendants operated a crack cocaine distribution ring from 2010 to 2014. Each packet of cocaine sold by dealers contained 30 rocks, priced at $10 per rock. Each …