How so? Maybe it will have more meaning to you when you understand that a Federal deficit is just the difference between all of the new dollars spent into the economy and the number of dollars removed from the money supply by Federal taxation in one fiscal year. The so-called "deficit" are the dollars that remain in the economy (money supply) and circulate for our benefit and use.
In short, when politicians and paid pundits moan to "reduce the deficit," knowingly or not, they are trying to reduce everyone's income.