Section 2:

Begins with: "I am the poor white, fooled and pushed apart"

Ends with: "The poorest worker bartered through the years."

What words and phrases are repeated several times in this section of the poem? What effect does this use of repetition achieve for the message and/or tone of the poem?

The word "Of" and the phrase "I am" are repeated several times in section 2 of the poem.

The use of this repetition serves to personalize and give face to people who are not part of the American dream, that is the poor whites, African Americans, American Indians and immigrants who have all been left out.

Explanation:

In this second section of the Let America Be America Again the angry tone of the poem is emphasized and shows that this is not just about one group of people but includes the poor whites, African Americans, American Indians and immigrants who have all been left out.

The use of the phrase "I am" is to personalize and give face to those people who are left out.