Don't know how the paper work flows in the UK but here, you can bet that once the bride's right to stay in the US has been made permanent either as a permanent resident alien or as a naturalized citizen, divorce is not too far away.
The great thing about western societies in general and the US in particular is that once here, these brides usually absorb western values and social rights by as if by osmosis if nothing else and usually learn to assert those rights to their own benefit.
Of course, there are many who remain victimized and terrorized, especially ones from poorer countries in Southeast Asia.
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And that's the second part of the story, many of these mail orderers are socially deviant to begin with and have discovered that they can satisfy their needs more safely by bringing in an unsuspecting foreign bride.
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