According to

There is a report on Roll Call, that Representative Brady is saying the next Trump tax cuts will be put off until 2019 if the GOP is still in control of both houses.

Earlier this week, Trump said that a new 10% tax cut would be announced in the next few weeks and they would be deficit neutral.

I think that blanket statement was a little aggressive. It did not really advance stock markets either. In fact, the market may be a little more worried about deficits and higher rates vs. more runaway fiscal stimulus.