It's because the United States of America became too big, both in territorial size as well as in stomach girth.
We think we're too big to fall, and being so big, we're less likely to get riled up than a smaller community would.
"Give us our daily bread" was not referring to God, but to Rome, who knew as long as the people do not go hungry, they won't revolt. So every household was allowed a loaf of free bread per day. That's the purpose of welfare, to make people fat and apathetic and complacent. That's why a significant portion of poor people do not vote. They know their votes won't matter, but at least they got food in the kitchen.