Study about the people the changes ACTUALLY affected vs stats on an overall population.
Trump is president and the economy is going good, so you believe Trump is the cause of the good economy?
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There is actually good reason to exclude large companies. It's a lot easier for them to absorb that impact. Your mom & pop burger shop will have a lot harder time absorbing the change than McDonald's will. So I guess the mom & pop shop goes under, and McDonald's hires the same number of people to you that is perfectly ok.
Also not to mention the change had less of an effect on large corporations than it did on small.