This is a question for the US emigration authorities.
No, U.S. Customs and Border Protection (CBP) cannot deny entry to U.S. citizens.
Of course - money !
(in the US) There are no travel or passport restrictions placed on ex felons who have bene released after serving their sentences. HOWEVER - SOME nations, due to your past criminal record, MAY deny you entry into their country.
They think that the result of telling the truth will be worse then to deny it ANSWER: I agree, but for some of us, if we deny or tell white lies it will help us not to be on a hot seat, or in trouble that might hurt someone who we care about. There is of course the point that people deny things is because they are not guilty of what they are accused of.
No. In fact, there is no mechanism whereby the US government can force any legal citizen to leave the US or deny re-entry to the US to any legal citizen.
Romanians hasn't free access in USA.
Only for money; also gays, thieves or sectarians.
In Spain, Italy, France, Germany, US, Canada etc.
Generally this role is considered negative by the majority of Romanians.
The exact number is not known; probable 400 000.
Any jobs, there is no caste system preventing us from taking a particular job!
Answer: Yes, it can be. If this person know how to read and write, isn't a felon, and can get a job, they should be fine though. It also helps if they speak English.