about the deportation issue:
If you are married to a US citizen, you must still apply for a green card and provide evidence of your marriage. As well, you may be required to prove that you did not undertake your marriage in order to secure a green card. This is considered an offense and therefore immigration officials may investigate your marriage if the timing of the event seems suspicious. You and your spouse may be asked individually about your courtship and marriage and may investigate your marriage and living arrangements. Immigration officials may also speak to your friends and family to determine whether the marriage is legitimate. A marriage undertaken just to secure a green card is not considered legitimate and usually will result in a denial of a green card application, even if one of the partners is a US citizen. If an investigation by US immigration authorities determines that you have married a US citizen in order to gain a green card, this is considered fraud and in some cases deportation proceedings may be begun.
and
In every case, when you apply for a green card for your spouse, be advised that the permanent residency for your spouse will be conditional for two years. Within 90 days of your second wedding anniversary, you and your spouse must apply to the USCIS to have the permanent residency become permanent.
from here:
http://www.uscitizenship.info/blog/us-citizenship-and-marriage
When a person receives a green card based on a marriage that is less than 2 years old when the person becomes a permanent resident, then the resident status is Conditional for two years. At the end of the two years, the resident status expires unless a petition to remove the condition is approved by the BCIS.
The petition to remove the condition is signed by both the husband and the wife. It is possible for a divorced spouse to sign the petition alone and then have the condition removed if it is proved that the marriage was genuine and not a sham.
The BCIS will consider a petition which is signed by the conditional resident alone only if the marriage has ended (usually by divorce)...in other words, a separated couple cannot have the condition removed unless both sign the petition or they end the marriage.
There are special rules for battered and abused spouses, for political asylum cases, for widows of US citizens, and other rules which are beyond the scope of this basic introduction.
This is a very brief introduction to a complex subject. This general introduction is not intended to apply to any specific situation. They say there are exceptions to every rule...
from here:
http://www.lawcom.com/immigration/marriage.shtml