In his 13 years in office, Archbishop Arguelles canonically erected new parishes in Lipa City, Lemery, Taysan, Tanauan City and Batangas City and organized Marian events such as the annual Taal Lake Marian Regatta and National Days of Prayer in Lipa, both held every September. He is a strong opponent of the passage of RH Law, the operation of motorist lodges in the province, the possible mining activities in the municipality of Lobo, and the construction of a coal-fire power plant in Batangas City. He also led the establishment of a local election watchdog separate from the Church-based PPCRV.