Yes this would be relatively easy.
get a green card or a visa..
Visa is a document required to enter any foreign country. US Green card is immigrant visa which allows you to live and work in US.While other types of non-immigrant visas like B-2 tourist visa,F-1 Student visa etc can be used to stay in US till it expires or until the purpose of your visa is complete.
Illegally......................in order to work in the USA you need a work visa.
Yes provided that relative is a permanent resident or green card holder or a US citizen. Once they petition for relative depending on the eligibility and availability of visa the relative would be issued a immigrant visa to enter US after which will be issued green card.
it depends on how long your going for. if its longer than a week you need a visaAccording to Thai Immigration Rules and Regulations, there are several types of visa to be chosen from depending on each foreigner's qualifications and objective of their stay which can be categorized; as follow:1. 30 Day Stamp:2. Tourist Visa (TR):3. Retirement Visa (Non Immigrant "O"):4. Marriage Visa ( Non Immigrant "O"):5. Business visa ( Non Immigrant "B"):
no
Well the baby is a U.S. Citizen and since the baby is a U.S. Citizen, in time the "illegal immigrant" may be able to get a green card and first of all an illegal immigrant isn't illegal if they have a visa, except if they were living and working in the U.S on a tourist visa,
What do you mean green card changed for a visa? A visa to do what? Why would you want to change a permanent lawful residence status for a visa?
I had a student visa but went out of status Can i marry a green card holder and apply for a green card?"
Sometimes. The immigrant must follow the same procedures and apply for the green card. Often, they must voluntarily return to their home country to wait for their visa and permission to come through.
No. Green cards are not issued due to getting married.
Right after the marriage , the thai immigrant should apply immediately for a green card , he/she has the right to do so, and then after obtaining green card she/he can stay in US whatever he want , even after getting a divorce. Your question is ambiguous, be more specifically . What's your status ? Have you applied for a green card yet? If you get divorce, before you got some legal documents you can be deported. Call a lawyer, he can help you.