MNI EUROPEAN OPEN: US Equities Down, Yields Up Post Downgrade

EXECUTIVE SUMMARY * MOODY'S CUTS U.S. DEBT RATING TO Aa1 ON DEFICITS - MNI BRIEF : #7170c051-6f1e-4759-a7b2-ca752d4c3f85 * TRUMP TAX BILL ADVANCES AFTER GOP DEAL FOR FASTER MEDICAID CUTS - BBG : #f6a169aa-a9ec-4e70-8670-215166a46b8a * WARSAW MAY...