Local sources can be a valuable addition to your reporting on a national or international story. But, think about if that source makes sense, and how they fit into what you are writing.
General tips when you interview:
1. Avoid Yes/No questions. Focus on Who, What, Where, When, and Why. "Do you like Columbus?" isn't a very useful question - it isn't well thought out (they are part of the community after all) and it is a closed question. "What are your thoughts about Columbus?" gives more room for the person to answer.
2. Prepare your questions ahead of time, even if you know the person. This helps you avoid closed questions and helps you focus one what you really want to ask.
3. Avoid compound questions. For example, "What do you think about the travel ban and how this impacts your family" These are two separate questions.
4. Watch for your own assumptions. Don't let your own ideas lead your questions. "Parents that don't vaccinate their children should be punished, right?" shapes the interview in a direction that may not really show the beliefs of the person being interviewed.