the sacrifice mccain was talking about is that rupublicans want to cut taxes, its one of the main goals on their agenda. no legislature in the history of the world has lowered taxes during a war, and mccain is saying that they have to sacrifice their goal of lowering taxes in order to adequately fund the war without sinking (even more) irreparably into debt.
*Jews you*
"this is okp tho, reading is completely optional" (c) desus