Want to move to the Netherlands? As a U.S. citizen apply to the Friendship Program, prove you can support yourself for 5 years and get residency.
Want to move to Mexico? Show them you have $1000 in your account every month and get residency.
Want to spend a year in Australia, New Zealand? Working holiday visa for US citizen under 30. (more options if you're not from the U.S.).
Want to spend a year or more in Europe? Apply for a research or arts visa.
Some people do not live their lives looking for a wife (or husband in my case) and to suggest to a 24 year old that he find the perfect fit as if he were buying a Filipino wife from a catalog who also likes dogs and long walks on the beach is irresponsible.
(Oh, and want to move to the U.S.? Good luck doing that as easily as any of the ways mentioned above)
Since he will be moving to another culture this means his most available girlfriends will be someone overseas. Should this lead to marriage it then becomes a good way to remain in the culture.
It has nothing to do with mail order brides or race betrayal or whatever you are freaking out about. It has to do with a complete package of advice for this one person and his circumstance. It is not meant to apply to you or to people in general.