Gaby Pacheco, president and CEO of the TheDream.US, says the Deferred Action for Childhood Arrivals program has had an outsize impact on immigrant students since it was announced 14 years ago. But today, it’s facing “death by a thousand cuts.” Fourteen years ago this month, former president Barack Obama announced the Deferred Action for Childhood Arrivals program, a relief for immigrants brought to the U.S. as children, who are often referred to…