Northern Ireland stuck in political paralysis despite Brexit deal

London and Brussels have signed into law a Brexit deal for Northern Ireland but one of the problems it was supposed to fix — months of political paralysis in the region — remains as intractable as ever.

Northern Ireland’s biggest unionist party has been boycotting the region’s political institutions since May to oppose post-Brexit trade rules.

After the EU and UK ratified the hard-fought Windsor framework last week, the Democratic…