It’s up to you. I’d just say you’re not likely to be doing substantive policy work. If you were working at a McDonalds near the Capitol, or working a landscaping crew on state grounds, you could also be seen as helping him, right? If you were working at a Jiffy Lube and you changed his oil, you’d be helping him achieve his agenda, in a sense.
Sure, working in his office might be a little different. But you’d likely be opening mail or answering phones and helping constituents in some way.
You’re not going to be pitching major donors or crafting legislation.