Who is one of Nebraska's current U.S. Senators?

Deb Fischer is one of Nebraska's current U.S. Senators. She has served in this role since 2013 after winning a special election. Fischer is a member of the Republican Party and has been involved in various legislative efforts focused on agriculture and rural issues, which are significant to Nebraska's economy.

The other individuals listed have also served as U.S. Senators from Nebraska but are not currently in office. Ben Sasse served until January 2023, Mike Johanns served from 2009 to 2015, and Bob Kerrey was a senator from 1989 to 2001. Therefore, they do not represent Nebraska in the Senate at this time. This context helps illustrate why Deb Fischer is the correct answer for this question regarding the current U.S. Senators representing Nebraska.