I would say that American poetry has always been a poetry of personal testimony.
Poetry is something that happens in universities in creative writing programs or in English departments.
Poetry is first and last language - the rest is filler.
I think that great poetry is the most interesting and complex use of the poet's language at that point in history and so it's even more exciting when you read a poet like Yeats almost 100 years old now and you think that perhaps no one can really top that.
I think I'm a very good reader of poetry but obviously like everybody I have a set of criteria for reading poems and I'm not shy about presenting them so if people ask for my critical response to a poem I tell them what works and why and what doesn't work and why.
I have always wanted what I have now come to call the voice of personal narrative. That has always been the appealing voice in poetry. It started for me lyrically in Shakespeare's sonnets.
I don't like political poetry and I don't write it. If this question was pointing towards that I think it is missing the point of the American tradition which is always apolitical even when the poetry comes out of politically active writers.
From reading a previous answer you know that I consider all those aspects to be part of American cultural myth and thus they figure into good American poetry whether the poet is aware of what he is doing or not.
Distinctly American poetry is usually written in the context of one's geographic landscape sometimes out of one's cultural myths and often with reference to gender and race or ethnic origins.
PC stuff just lowers the general acceptance of good work and replaces it with bogus poetry that celebrates values that in themselves are probably quite worthy.