For citizen = taxpayer: to be fair, a lot more people in the US pay taxes than are citizens. Undocumented people pay taxes and in doing so pay into benefits that they will never be able to access, while wealthy citizens are essentially exempt and still benefit from “taxpayer dollars.”
When they refer to caring about “taxpayers,” and “what about taxpayer dollars,” and that sort of thing, know that they’re not just using propoganda, they’re actively lying, trying to make citizenship equivalent to paying taxes. If they truly believed in “taxpayers,” they’d actually care about the people who actually pay taxes, and refuse to give special treatment to wealthy tax evaders.