Dust off your passport. American woman are known as the most demanding of any country. Conversely, American men are universally appreciated because of what they have to put up with. :^)
Women marrying across an age gap of 15+ years are most likely looking for a guy who is financially well off, who looks like George Clooney, is a celebrity, or some combination of the three. If you fit into any of those categories your chances of finding a much younger wife are pretty fair.
The alternative is to marry closer to your age, likely with a once-married woman. You can always adopt - either her children (lots of single women your age with kids) or through an agency.
Many men are doing the same thing women do ---waiting too long to marry and have children. The chances of having a baby for an over-40 woman goes down --but the same happens to men because of a shortage of 25 year olds who are looking to marry 40+ men ---most will marry within their age group and there's a new trend of women marrying younger men.