From executive posts, he made his way into the legislature by almost garnering the most number of senatorial votes in the 2004 elections. Though then just a neophyte lawmaker, Senator Bong Revilla headed two important committees during the 13th Congress, namely the Senate Committee on Public Information and Mass Media and the Senate Committee on Public Works. Through his chairmanship of the latter, he fought corruption in the government. He exposed over-delayed completion of infrastructure projects and recommended the sacking of irresponsible DPWH officials. Also during the said Congress when he pushed for the lowering of amusement taxes slapped on movies which paved the way for revival of the then struggling local film industry. In his first three years in the Upper House, he was the senator who has the most number of bills passed into law.
Being a legislator did not stop his being a man of action. Rather than confining himself to legislative duties inside the walls of the Senate, he continued to reach out further to the needy especially those in the far-flung barangays nationwide through his Kalusugan Ating Pangalagaan medical assistance program and Karunungan Ating Palaguin educational assistance program. Aside from these undertaking, he also conducts on-site inspections on damaged government infrastructure and relief operations, under his Kaagapay sa Araw ng Pangangailangan program, even during the darkest height of calamities and away from the spotlight. For him, services and benefits must surely be felt by the people.
During the 14th Congress, Senator Bong Revilla pushed his travel safety advocacies both as chairman of the Senate Committees on Public Works and on Public Services. Among his remarkable accomplishments then is his exposé on sex video scandal and the passage of his pet bill, the Mandatory Helmet Act, which obliged all motorcycle riders, including the backriders, to wear standard protective helmet to reduce the alarming motorcycle-related accidents in the country. Because of the said road safety measure, he was named Safety Ambassador both by the Land Transportation Office (LTO) and Suzuki Philippines Inc.
The senator, whose bills and laws he filed during the 13th and 14th Congress can be summed up to direct service to people, improving the lives and enhanced the livelihood of the people, vowed to formulate more laws that will equip people to accelerate development.