Tax cuts work every time they are tried...no matter what your government paid economics educator and propaganda administrator says....
If you mean they "work" to make the rich...richer...then yea.
If you mean they produce more revenue than they cost...then no.
And now we'll be treated to some nonsense about capital gains tax cuts increasing revenues...which they might do for a very short period while the wealthy move capital gains forward to take advantage of them.
INCOME taxcuts...NEVER even pay for themselves...ever