Democrats lean into border security as it shapes contest for control of Congress

With immigration shaping the elections that will decide control of Congress, Democrats are trying to outflank Republicans and convince voters they can address problems at the U.S. border with Mexico, embracing an issue that has traditionally been used against them. The shift in strategy, especially from Democrats running in battleground states, comes as the Biden administration has struggled to manage an unprecedented influx of migrants at the Southwest border. Donald Trump, the presumptive Republican presidential nominee, has led his party in vilifying immigrants as “ poisoning the blood ” of the country and called for mass deportations of migrants.