Spending is up? Massive increase in military spending. Cost of wars Bush II lied us into. Rise in population. tax cuts are the problem in large part. Starting with Bush II's stupid ta cuts to the rich.
https://en.wikipedia.org/wiki/Economists'_statement_opposing_the_Bush_tax_cuts
The Economists' statement opposing the Bush tax cuts was a statement signed by roughly 450 economists, including ten of the twenty-four American Nobel Prize laureates alive at the time, in February 2003 who urged the U.S. President George W. Bush not to enact the 2003 tax cuts; seeking and sought to gather public support for the position. The statement was printed as a full-page ad in The New York Times and released to the public through the Economic Policy Institute. According to the statement, the 450 plus economists who signed the statement believe that the 2003 Bush tax cuts will increase inequality and the budget deficit, decreasing the ability of the U.S. government to fund essential services, while failing to produce economic growth.[1][2]
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But Bush and the GOP went ahead anyway and ignored the experts. And trump is following in Bush's foot steps.
Back in reality, defense spending has been decreasing in inflation adjusted dollars, as a share of federal spending, and as a share of GDP since 2007.
That said, I'm happy to subject it to the same 24% cut as everything else.
It's worth noting you could cut military spending to zero and still not cover the growth in federal spending above inflation since 2007, so it's odd (or at least inumerate) that someone would consider it "the problem".