What phrase would generally describe the changes in American politics?

Modern Liberalism.

Explanation:

Modern American liberalism is the authoritative version of freedom in the United States. It is determined by social freedom and connects ideas of public freedom and equity with assistance for social justice and a combined economy. Economically, modernized American liberalism argues cuts to the social security net and supports a function for administration in reducing disparity, providing knowledge, guaranteeing entrance to healthcare, controlling financial activity, and guarding the natural surroundings.