Can someone clarify why the author talks specifically about Trump's America? This kind of excessive profiling at ports of entry happened under GWB and Obama too

Can someone clarify why the author talks specifically about Trump's America? This kind of excessive profiling at ports of entry happened under GWB and Obama too. I have heard many anecdotes in the last 15 years. Is there a provable and statistically significant increase in intensity or number of such incidents? In its absence, we should settle for a prior for likelihood-of-being-profiled that is defined by pre-Trump rates. We can't arbitrarily update this prior based on our political opinions.