Of course government spending has to be kept under control, but taking a chainsaw to it may not be the best approach. As I understand it the cuts to USAID left a lot of projects in the lurch and didn't save anything like what he promised. Losing research and inoculation programmes are predicted to lead to many thousands of extra deaths. This is from the guy who said he would help cure world hunger and then didn't. I know it's not easy or cheap, but it is a worthy goal.
Foreign aid has also been cut in the UK and there is talk of spending more on defence. Issues with climate change, water and land usage will lead to more conflict and can't be fixed with weapons or 'AI'.