Why must the United States be the only welfare country in the world?

Well... we're not is the short answer. Every 1st world country has social welfare programs in place and some are more socialist than ours. When it comes to corporate welfare though ours is pretty high up there.

A functioning infrastructure (roads, bridges) is one viable hallmark of a developed nation. When one sees a good road, it is assumed things are going relatively well, so the U.S
set the welfare system about the 1930's, as an aid to the less economically fortunate and not to enable chronic personal ills such as laziness or work aversion.

Poverty is a systemic inflammation that ravages societies and nations, leaving those in its wake worse off. Thanks to our American welfare system, those individuals on the border avoid falling headlong into the pit of poverty....they have a life preserver. Seems like the United States chooses to be "the only welfare country in the world."