Mexico's president has lashed out at Moody’s ratings service after it downgraded the Mexican government’s debt outlook to “negative.”

A top credit rating firm dimmed its outlook on Dallas’ financial future after voters approved changing the charter to require at least half of annual city revenue increases to boost police pensions, staffing,

Mexico's outlook was moved to negative from stable by Moody's Ratings on Thursday, as the major credit rating agency pointed to institutional and policy weakening that risks undermining the economy as well as government accounts.

Moody's linked Mexico's credit outlook downgrade to the nation's government debt and the constitutional overhaul of its judiciary system.

Mexico’s president lashed out Friday at Moody’s ratings service after it downgraded the Mexican government’s debt outlook to “negative.”