Exclusive-US mulls scuppering France's Washington ambassador pick over human rights spat

By Gabriel Stargardter, Humeyra Pamuk, Gram Slattery and Andrea Shalal PARIS/WASHINGTON July 29 (Reuters) - The United States is considering delaying, or even blocking, President Emmanuel Macron's choice for France's next ambassador to Washington following public French criticism of the country's human rights record, according to four sources.