"And corporations, which were not mentioned in the Constitution, were later defined as "artificial persons," as contrated with "natural person" (aka human beings)."

This, as many decisions we either endure or agree with is true, too. But as early as 1819, the Marshall Court in Dartmouth v Woodward set the basis for corporate personhood rights. Of course the 14th Amendment--nearly 40 years later--might have reversed that with the language Genie suggests, but that would have turned back the clock on what had helped make the country great to that time.