At the end of the article, Kathleen Hall Jamieson says, "Elections in times of national crisis place challenges in front of whoever is president. When a president steps up in one of those moments, you get Lincoln in the Civil War, you get Roosevelt in World War II. This is one of those moments." What does she mean by that?

The new elected president has a great challenge.

Explanation:

Kathleen Hall Jamieson means that when election comes during the national crises, the new elected president has a great challenge in order to protect the nation from this crises and end up the crises with his intelligence. There are many examples when the election held during national crises such as Abraham Lincoln during the civil war and Roosevelt during World War II. Both these leaders elected when there was a national crises.

the 9th amendment

explanation:

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.