Why did the US govt used US tax $ to helped fuel the Saudi jets when bombing Yemen?

I see no reason for the US to be involved in that conflict in the first place.

The Saudis have plenty of $ of their own.

Don't know if it is true, but it would make sense, that we would assist the Saudi's in the fight against terror as reciprocation for their assistance in our efforts to root out and destroy terrorist organizations.

The President will do anything he can to oblige the Saudis he does business with. Spending tax dollars bombing civilians? Okay! Selling them nuclear technology? Fine! Trump and his clown car have howled like the blazes about allowing Iran to have the bomb, and now they are helping the Saudis to it! Remind me, please, what nation the 9/11 attackers came from.

Saudis launder money into the USA by buying condos in Trump's business at inflated prices with Congressionally sanctioned money and selling them for a loss with freshly washed American dollars. Trump depends on them and the Russians for financing because no reputable bank or prudent investor will lend him a nickel. That's why those civilians are dying.

What is your CREDIBLE source for that?