1- Socialism didn't found widespread support in the US because of several reasons. The first reason might be because it arrived at the US for a period of time where there were too many things going on. Many protests and riots from the Labor Party and the Red Scare. People were afraid, confused and concerned about other topics rather than caring about Socialism ideals. The second reason might be because many other movements were stepping in harder such as Communism and Anarchism, these ones had much more support and followers. Therefore, not many people did actually care about Socialism diving deep in society.
2- The good things that might come from the government creating more programs and regulations are many. A socialist government would create more health-care programs, would give more scholarships or even become private schools and hospitals public again.
3- The negative aspects which can result from a socialist government getting involved in the economy may be that they might benefit low social classes more than any other else. Therefore, the distribution would not be equal for the rest of the population.
Fear of communism, the American tradition of self-reliance, political opposition from the wealth/business interests.
Taking care of poor/vulnerable people, reign in abuses of big business and private wealth.
High tax burdens if programs become too generous, a risk that people would lose incentive to work hard.
