In Taiwan’s Constitutional Court, 8 justices handled a case on whether amendments to the Constitutional Litigation Act were unconstitutional: 5 ruled parts invalid, while 3 refused to join and said the 5‑justice panel was illegitimate.

From a constitutional design angle, parliament is built for political fights, so walkouts and boycotts are basically “priced in” as part of democratic struggle, and the cost is paid through political responsibility and elections, not legal sanctions.
But a constitutional court is meant to keep the system running, so if justices can boycott deliberations to block quorum, they turn a political weapon on a body that is supposed to stay non‑political and end up paralyzing the very system they swear to protect.
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