For the 2019 budget, Lacson raised questions about the post-ratification tweaks made by the House leadership to the spending bill, saying this would violate the 1987 Constitution's Art. VI, Sec. 26, Paragraph 2: “Upon the last reading of a bill, no amendment thereto SHALL be allowed.” He also noted P72.319 billion was slashed from the DPWH's MFO 1 and 2, which covers the Duterte administration's “Build Build Build” program. The projects under the MFO (Major Final Output) had already been planned and vetted.