Taiwan's ruling and opposition parties are in a fresh constitutional fight, and the clash makes it harder for any contested law to take effect.

• Premier Cho Jung-tai said the president has no veto power, so the premier must refuse to countersign laws he deems unconstitutional.
• The KMT called that a public rewrite of the constitution — inventing a veto that does not exist and scrapping one that does.
• The constitution already offers a path: the cabinet can ask the legislature to reconsider a bill, but must accept the result if lawmakers hold firm.
• KMT spokesman Chen I-hsin warned that letting the cabinet refuse to sign even after losing a reconsideration vote would let it ignore the legislature forever.
• The KMT called the idea a recipe for executive dictatorship, with legislative votes stripped of meaning.

Outlook: Expect the fight to move toward the constitutional court or another standoff over the next contested bill, with the opposition-controlled legislature and the cabinet both digging in.