WASHINGTON — Frustrated by the failure of Congress to act against gun violence, a group of clergy from New York and New Jersey is trying a new lobbying tactic — in Europe.

In a novel approach, the religious leaders fly across the Atlantic on Sunday to push European gun manufacturers, who have a roughly 25% share of the U.S. market, to apply some of the more stringent standards they already follow in their own countries to the weapons they sell in the U.S.

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