You can try. If you get caught, you can be jailed, questioned and deported. It isn't worth the risk to enter the US illegally.
No, you cannot reenter the US without a passport.
yes
No, when his fingerprints were checked his deportation history would be found. The foreign national committed a felony and therefore has been permanently deported. Any person attempting to circumvent immigration laws to aid a deported felon in returning to the US would be guilty of committing several federal felonies, all of which are punishable by a mandatory prison sentence and fines.
Yes, Haiti is an independent country.
The US passport is what you need to get back in. Unless you're already outside the US, I wouldn't leave until you have this important document. Technically, you could just reenter the US as a Canadian tourist with a Canadian passport under the VISA Waiver programm but why chance it?
As long as you have a valid passport/Nexus card and haven't committed a crime or done anything else to cause you to be denied entry you should be allowed to reenter Canada.
Green Card and a US Passport will be enough for a person to re- enter the US. One thing to be noted here is the duration that one stays out of the US. If the person is away from the US for a year or longer, then a permit to reenter must be obtained. The applicant should have applied for the permit and got it approved before leaving the US itself.Form I-131 is used to apply for permit to reenter the US
It depends on the time period you are planning outside US. If its within a year using green card itself you can reenter US. In case you are planning to stay outside US for more than a year but less than 2 years of time a reentry permit is required to return to US.
Yes, but you will not be able to reenter the US without a valid passport. (source below)
Yes provided your stay abroad or outside US was for less than 180 days. If you were outside US for more than a year you would need a reentry permit which you should have filed for using Form I-131 before leaving US. This permit is valid for 2 years and can be used to reenter US if you stayed abroad for more than a year. After you enter US you need to apply asap for green card renewal using Form I-90.
If you are coming from abroad then yes, you still need your passport. The passport is a very important travel document which you should always carry when you travel in and out of the US.
Using the green card and passport you can travel abroad provided the stay outside US is for a maximum period of 180 days. If you plan to stay for more period of time you should file for reentry permit which is valid for 2 years to reenter US using immigration form I-131 travel document. After a year as a green card holder if for work or any purpose you need to stay outside US you can preserve your residence in US for naturalization purposes later.