First you would have to define "what issue"? The topic title is about Trump admin no longer forecasting 3% growth, actually some of them, such as Larry Kudlow, are still forecasting 3% growth.
Many economists have stated the natural growth rate of the economy is 2% over the long term, and forecast that the tax cuts would only stimulate the economy in the short run, big in year 1, less in year 2, then back to the 2% trend.
The interest rate increases have been warranted IMO. Inflation is running 2% these days, why should we not have a fed funds rate of 2.0 - 2.5%? We should. Additionally, that little rate boost helped all us retirees a little. Now we can afford to go eat a meal out once or twice a month. The interest rate hikes put money in the hands of savers, and if you haven't noticed, there are a lot of us retirees, and we can stimulate the economy a bit now that we have a little more safe income.
Actually, I like a natural growth economy. When you think you NEED a 3% growth rate, and you go out and stimulate with deficit spending, which is what Trump is doing, when the inevitable slowdown occurs, you take a harder fall since the economy was built on a weak foundation of artificial stimulation, or you stimulate more to try and keep the economy from rolling over. Both scenarios are bad.
In the 60's and 70's, tax cuts were typically for 2 or 3 years, to stimulate the economy. There was no belief that they were permanent fixes. The Reagan tax cuts were eventually reversed by Bush (no new taxes) 41 and Clinton, producing the only balanced budget of the last 70 years in 2000. The Bush 43 tax cuts in 2001 and 2003, amounting to $110 billion per year were done for 10 years, and they certainly didn't fix anything. In 2004, Greenspan still had interest rates at 1% to help get Bush re-elected, but those exceptionally low rates along with inadequate regulation of the mortgage industry and unstable mortgage products like "no doc" loans, all conspired to give us the financial crisis. So I don't think that lower tax rates is always the answer, certainly not permanently lower rates if you don't cut spending also, which we are loath to do.
But first we have to know what problem you think you are trying to solve.