If by fixed you mean fake then yes, you can. Contact your local Dept. of Homeland Security office with as much information as you have (names, addresses etc.).
Marriage is recognized by the US , but they must report it when they get home. It does not affect their alien status.
You better register the marriage at the nearest US mission in the country where you are getting married to avoid the risk that the US government may not recognize marriage certificate from that specific country.
go to us immigration and customs enforcement> contact us> regional office
no
Check with the US Immigration office.
The crime should be reported wherever the crime occured.
If the marriage between the Jamaicans was done according to Jamaican law then yes the marriage is legally binding in the United States as well.
you can report it to the court to complain
as long as it isn't done in the U.S., it should be fine.
"Marriage. Marriage is what brings us together...today."
report to the US consulate or embassy in that country.
I don't believe there is anything in the US Constitution about marriage.