LITTLE ROCK, Ark. (AP) — President-elect Donald Trump and congressional Republicans who have pledged to cut federal taxes to boost the economy might consider looking first at lessons learned in GOP-controlled states that adopted similar strategies, only to see growth falter and budget gaps widen.

The situation is worrisome enough in Kansas, Oklahoma and Indiana that lawmakers are now debating whether to reverse course and raise taxes. And political leaders in states that have seen expanded Republican control, such as Arkansas and Iowa, are signaling caution about any new tax-cut proposals.

"It...