But specifically at this moment in time what you've written is total hogwash. Currently the US is spending money as if it's, specifically, an infinite resource.
Hence, this kaibosh on science funding can only be explained because the powers that be want it dead and gone.
Do with that info what you will. The various flavours of conspiracy-theory-leaning ideas on wanting to 'scare the scientist community away from commenting on political affairs' seem like the most likely explanation to me despite how petty and crazy that sounds.
If you are a scientist, get out.
Either out of science, or away from US-centric research systems.