Prosperous and Secure Neighbor Alliance Act of 2007

Prosperous and Secure Neighbor Alliance Act of 2007 - States that it is U.S. policy to increase U.S. foreign assistance to improve security and promote economic development in Mexico, both of which are crucial to combat illicit drugs and drug-related violence and other criminal activities in Mexico and the United States.

Amends the Foreign Assistance Act of 1961 to direct the President to provide assistance to improve security and promote economic development in Mexico by: (1) professionalizing Mexican law enforcement personnel; (2) providing technology to assist Mexican law enforcement personnel; (3) strengthening the Mexican judicial branch; (4) supporting anti-corruption programs in Mexico; and (5) reducing poverty through targeted funding to enhance social development in Mexico.