All sibling comments are untrue, because it is the legislative branch that has the "power of the purse", including the ability to raise/lower taxes and pass budgets for spending.

So whether an executive makes campaign promises, takes credit for signing the bills into law, or championing the bills and advocating that Congress pass them, it is ultimately Congress--the House with the Senate--that has done these things with taxes and the budget.

It's common practice to refer to terms by the president of the period even if they're much less responsible for the effects than is implied.

Taxes went up and relative spending went down during the period when Bush Sr was president and Democrats controlled the House & Senate.

Taxes went up and relative spending went down during the period when Clinton was president and Republicans controlled the House & Senate.

This was not true when they had a trifecta. There are reasons many Americans prefer the parties split power.