Any law enforcement agency wanting to participate in an interagency cooperation agreement should agree that: a. Houston Police Officers' Union (HPOU) as the Majority Bargaining Agent for all Police.A state agency may enter into an agreement with the United Mexican States, a political subdivision of the United Mexican States, an agency of the United States. Interpol is an international organization, consisting of 187 member nations, that facilitates cooperation between police forces in various countries. We found that many FBI and HSI personnel lacked understanding of the other agency's mission, jurisdiction, and authorities. Many agents wrongly. Greg Abbott has signed into law sweeping new powers that allow police to arrest migrants who cross the border illegally.