The European Union on Wednesday moved ahead with legal action against Hungary, Poland and the Czech Republic for refusing to comply with a controversial E.U. scheme to redistribute refugees and migrants for resettlement across the bloc. Hungary’s conservative government has labeled it the “George Soros plan” after the Hungarian-American financier who last year pledged to invest $500 million in support of European migrant resettlement. The E.U.’s executive Commission announced it was moving to the next stage of its “infringement procedure” — the three eastern European countries have a month to respond to a formal request to comply and if their...