The spouse can sponsor the alien any time after getting married. If he snuck into the United States illegaly, however, he will have to leave the country to go to the interview. The petition will be deined due to the ten year bar, which will be against him due to his illegal entry. The ten year bar prevents him from going back to the US for ten years. The only way to overcome the bar is for the spouse to prove that it would cause exceptional hardship for her to move to Mexico to be with her husband.
Go back to Mexico and wait in line. Sorry.
Get married in the US. the illegal will NOT be allowed to enter the US until his/her Permanent Residency is approved which takes 6 months to 1 year.
Very difficult to do so; go to government site and find out about illegal marriages.
Indeed.
I'm assuming you are a US Citizen. It should not be too difficult for your spouse to get a tourist visa if that is what you mean. If your marrying future spouse here in the US I would recommend filing for residency BEFORE leaving for Mexico (6 month to 1 year approval wait), but this is based on staying in US until residency is approved! If marrying in Mexico apply from there or while visiting US (better) so visitations to the US do not become a problem once residency is approved. I would check with US Embassy in Mexico or IRS office here, depending on where you are currently living.
No, unless you are marrying different people. In that case, you qualify as a polygamous, and certain anti-polygamy laws can be applied.
If you are married than he is now legal.
The illegal foreign national will still be required to follow the prescribed USCIS procedures. This could mean the person will be required to leave the U.S. and then apply for a visa for reentrance. A foreign national whether illegal or not is not automatically granted permanent residency or citizenship status by marriage to a U.S. citizen. Marriage will sometimes (but not always) change the priority status given to an applicant's request. United States Citizenship and Immigration Services, http://www.uscis.gov
no
In the United Kingdom and in the United States, the minimum residency for a surgeon is one year. While in Mexico, the minimum residency lasts four years.
they're illegal in mexico, USA, and many more
She will still need to be sponsored by the spouse (who is an American Citizen) and apply for residency first. Once permanent residency is granted, she has to wait (I believe it's approximately two years) to apply for citizenship.