BRUSSELS — A top U.S. official on Monday pressured the European Union to join a Washington-led club on artificial intelligence and semiconductors. The U.S. launched the Pax Silica global club in December, an effort to counter China’s dominance by securing the supply chains underpinning artificial intelligence, including critical minerals, semiconductors, energy and hardware. But representatives from EU countries on Friday failed to give approval for the European Commission to begin formal talks