Identity politics, tribalism, class, and a host of other terms are generally used to organize one group of people against another group of people. Recognizing that this behavior is natural among humans means addressing it in a way that optimizes the potential of the nation rather than allowing it to polarize the country.

Germany succeeded to persuade "Germans" that they were Germans, not Bavarians, Prussians, etc. Ditto for Italy.

So, the answer to identity politics is to create a "national" identity based on core values that define our nation vs others. I would argue those core values should be grounded in individual freedom, meritocracy, tolerance, integration, and capitalism.

Individual freedom is grounded in human rights and the belief that government exists to protect human rights and when one person's human rights infringe on another person's human rights to determine a just resolution.

Meritocracy means not allowing discrimination to interfere with each individual's pursuit of happiness, nor allowing a person's membership in an identity group influence how a decision is arrived at.

Tolerance is needed because as a "nation of immigrants'", people "arrive" different, and it may take two to three generations for their descendants to assimilate. Tolerance is the first state of integration, eventually tolerance is replaced with social integration, and finally social integration is replaced with biological integration. This process may move at different rates with people and families, but the downstream goal is to create one nation, indivisible.

Lastly, capitalism is the key to prosperity. Capitalism is not perfect, because people are not perfect, but without society's cannot prosper. The challenge is unleashing the power of capitalism but reigning in abuse through regulation. However, the need for regulation is different than using regulation to turn capitalism into socialism.

One of the primary roles of public education is to teach the core values of society to all children. I am very concerned that today's public schools rather than focusing on teaching core values that should be bringing us together are teaching values that reinforce separate identities. But that is a separate topic.