BERLIN—Angela Merkel’s fight to secure her shaky coalition faced a new hurdle on Tuesday as the German chancellor moved to persuade her center-left allies to back tighter immigration rules.
After two weeks of wrangling that brought her government close to a collapse, the German leader and her rebellious interior minister reached a compromise late on Monday on measures that would make it easier for police to expel some migrants who turn up at Germany’s southern border.
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