No if the marriage is only for becoming legal. The person who marries an illegal to make them legal is breaking federal laws, can be arrested, and serve prison time. The illegal will be deported.
US Citizens can't be deported from the US. Any alien can be deported.
if u married an illegal alien u dont have a status so to speak, but u need to get him a green card, or he will get deported and whoever is married to him will have 15 yrs to life in jail for housing illegal aliens
They will become an American citizen
== == In Short: no.
A person will not automatically become a US citizen as soon as soon as an illegal alien marries a citizen. The illegal alien will have to file for a VISA with the INS.
only if the person marries a US citizen
Once you are officially married to an American citizen, you can not be deported from the country, unless you engage in a criminal offense.
The illegal immigrant will most likely be deported to whence they came.