He was an active member of the Integrated Bar of the Philippines ( IBP ) where he was a former President of the Pasay -- Makati -- Mandaluyong -- San Juan Chapter .
Drilon is a member of the Rotary Club , Makati Chapter .
Drilon was an active member of the Integrated Bar of the Philippines ( IBP ) where Drilon was a former member of the Pasay -- Makati -- Mandaluyong -- San Juan Chapter .
Drilon is a member of the Rotary Club , Makati Chapter .