> 
> Also needed: better tax enforcement through restored and increased
> funding of the IRS. **An expert review of data released by the
> Congressional Budget Office and the Treasury Department indicates that
> every $1 of additional investment in the IRS would yield $11 in
> increased tax collections and between 2020 and 2029 would raise $1.1
> trillion in additional revenue over and above current projections.**
> 
> 
> 

<https://www.investopedia.com/articles/personal-finance/082415/whats-wrong-american-tax-system.asp>

Why did the U.S. government lower the funding of the IRS? According to the above, funding the IRS is a good investment for the U.S. government allowing it to generate more revenues, so why did the U.S. government didn't maintain the funding or even increase it?