Only a European would say that so glibly. Do you have any idea how huge the US economy is? 3.5% of GDP is far from chump change... especially when you are allowing your infrastructure to crumble.
I lived most of my life in the US, and my first career was in your aerospace industry - I was a metrology engineer for many defense contractors. I had to change careers due to the “peace dividend”.
Most US spending post 1991 was not oriented towards Russia. It was “terror” and now its China.
US infrastructure is crumbling not because you dont spend money, which you do, more than anyone, but because you have accumulated a vast collection of leeches to suck it up before it ever gets to buying a bulldozer. And this I know really well. Ask me about headcount breakdown on gas pipeline work. And why its so.
Lets see, what was that $1.2 Trillion “Infrastructure” bill of 2021 all about? Nobody seems to bother looking into it.