A raid on Abby’s Bakery in Los Fresnos heralded the crackdown to come. Ahead of the owners’ trial for “harboring” undocumented workers, the community is seeing the impact of the president’s policies.Most mornings, Leonardo Baez, a father of seven, wakes up hours before sunrise to mix bread dough in the border city of Los Fresnos, Texas. Punishing and laborious work, yes, but owning a beloved bakery has been a lifelong dream of his, he said.It is now in jeopardy.In February, federal agents swooped down on his shop, Abby’s Bakery, detained workers they said were in the country illegally and pressed...