Ignore the projected spending; theoretically, Trump is going to reduce future spending. If you're looking for some biased narrative about how the DNC is responsible for spending, the GOP is the party of fiscal responsibility, etc, then you've come to the wrong place.
Do you think an expensive cold war and then an expensive hot wars may have contributed to the deficit spending under the last 3 GOP administrations? I don't know if the historical budget charts are still on the WH website, but under Reagan and Bush v2 domestic spending increased substantially. If you want to look up historical budget charts, the in-depth data is there. If you want to track the data, you'll actually find that domestic spending increases as control of Congress swings to the GOP. IIRC, I tracked that pattern back ~30 years and that was ~20 years ago, so maybe a 50 year pattern of the GOP being the ones who truly ratchet up spending.
The GOP clearly hasn't been fiscally responsible in my lifetime. Additionally, I'd say that the popular narrative of Reagan's economic policy is he was a "supply sider" like conservatives invented some new form of economics. In reality, I'd say Reagan's economic policy is actually Keynesian in nature - use tax cuts and deficit spending to get out of a recession. The GOP/Conservatives are fond of focusing on the tax cuts and ignore the massive spending increases. Bush v2 also inherited a faltering economy after the dotcom bust and again we see the Keynesian solution of cut taxes and increase spending. And although you don't want to count it, Obama did the same thing and cranked up spending and cut taxes when faced with the housing bubble. Obama's spending vs revenue gap is worse than Reagan's and Reagan was horrendous, so let's not dump this all on the GOP. Clinton by in large benefited from the tech boom and the ability to reduce military spending with the fall of the Soviet Union. The housing boom started toward the end of Clinton's run and helped offset the impact of the dotcom bubble.
