We think the question is for YOU ... And YOU need to do your own homework.
The legislative branch is responsible for passing laws on the following issues. Choose the one issue that is most important to you and explain why. Immigration, Health Care, National Security, Education, Environment, Taxes?
In my mind those are all pretty close to the same issue. I suggest you do your own work and learn what is going on in the world, so when it is time for you to vote, you can do so understanding who and what you are voting for.