Jalisco, which includes the cities of Guadalajara and Puerto Vallarta has authorized only Across The World Adoptions to operate in that state. Jalisco does not recognize DIF national approval or any other U.S. agencies. You can read the full announcement here:

http://adoption.state.gov/country_information/country_specific_alerts_notices.php?alert_notice_type=notices&alert_notice_file=mexico_2