Chicago Fed factory index down slightly in June Monday August 11, 11:59 am ET NEW YORK, Aug 11 (Reuters) - The Chicago Federal Reserve said on Monday its Midwest manufacturing index fell 0.2 percent in June, the third straight decline, led by falls in steel and auto production. The Chicago Fed's manufacturing index fell to 97.0 in June from a revised 97.2 in May. May was originally reported at 97.3. "While June marked the second consecutive monthly increase in factory output for the nation, it was the third consecutive monthly decline in Midwest manufacturing production," said Chicago Fed senior economist...