What are some cons to imperialism for the American expansionism?

Imperialism during American expansionism often led to the suppression of indigenous cultures and communities, resulting in loss of sovereignty and identity for native populations. It also fostered economic exploitation, as resources were extracted for the benefit of the colonizers rather than local communities. Additionally, imperial pursuits sometimes resulted in military conflicts and political instability, both abroad and domestically, leading to social dissent and ethical dilemmas regarding American values of democracy and self-determination.