I think you need to balance saving with paying off debt, and you can also play around with the order in which you do things depending on what stage in life you are at. Don't fall into the 'poor man's' mentality that you will always have a mortgage payment, student loan payment, car payment, etc for the rest of your life. For example, I chose to go hard and paid off all my student loans and mortgage in 8 years after graduating. For the first couple of years I only put in enough to get the match in my 401k, had maybe 5-10k in savings as an emergency fund that I didn't really have to add to or subtract from, and put the rest towards my loans. Now that everything is paid off, I max out 18k 401k, 5.5k Roth and save and invest another 50-70k/yr with ease.
As for Trump reducing taxes, nothing has changed yet. The tax brackets are the same with a slight increase for inflation.