Francisco Teixeira is up at 6 every morning, taking care of his 7-month-old daughter. The 33-year-old then heads to the Brazilian Convenience Store on Main Street, which he runs with his wife. They keep it open until 8 every night. Teixeira has been in the United States for the past 12 years, including his first eight in Massachusetts. After a four-year stint in Florida, he moved here to take over the store last month. The state has become his second home. After having a child, he said, he isn't considering going back to Brazil, and is looking to buy a...