:to become very upset or angry about (something that is not important)（为小事而）大发脾气，十分心烦意乱
I agree that he shouldn't have said that, but there's no reason to make a federal case out of it. [=make a big deal about it]他不该那么说，这点我同意，可你也没必要因此就大动干戈吧。
Do you have to make a federal case out of it every time I come home late?每次我回家晚了，你都非得这么小题大做吗？