What problem did the Kansas–Nebraska Act pose for the United States? The act intensified the issue over slavery in the United States Congress. The act called for a gradual end to slavery in the South. The act allowed for African Americans to vote in presidential elections. The act resolved the conflicts between the slave and free states.

The act intensified the issue over slavery in the United States Congress.

Explanation:

The Kansas-Nebraska Act of 1854 allowing settlers of a region to decide whether slavery to be approved within a new state's borders, and allowed for popular sovereignty. It also led to a violent rebellion called Bleeding Kansas. It was a rebel between antislavery and proslavery activists who flooded into the territories.

1920's

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explanation:

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes