Depends on when "again" is referring to. When was America "great"? For many America is better now than ever and I would argue that for some groups of people there is not a time in the country's past that they are anxious to return to.
Just because you want to find your way back to some standards does not mean you want to go back into time for everything that existed when said standards existed.
For example on college education...
I would love to find a way where college education was again affordable. This does not mean I want everything that existed in the 70s to return. I simply want to peel back the bloat that was added that made college unaffordable.
Slashing the excessive administration costs in universities does not mean I want to repeal Title IX. It just means that since 1970 salaries of full-time faculty members are, on average, barely higher than they were in 1970. While during this time, specifically between 1993 and 2009, administrative positions at colleges and universities grew by 60 percent or 10 times the rate of growth of tenured faculty positions.
Now some will say that in this time of massive cost increases there has been a massive increase of those graduating college but has that really made a positive impact? I don't think it has. All you have done is diluted the value of a college degree while at the same time tied an almost unbreakable weight of debt to most people in a generation.
This is not coming from a Trump supporter. He's kinda crazy. Just someone who can actually understand the idea of making America 'great'...'again'...does not mean going back in time.