Can you be denied to leave your previous home country at the airport if debts are not paid off in this country?
it won't happen if the country you owe money to is the U.S.A. Other countries have different laws and could do something wierd like that.
How can you enter the country where your spouse is residing if you are denied a US passport because you owe child support arrearages?
That seems far too obvious. Pay your debts before you attempt to take on other responsibilities. * You do not need a passport to leave the United States. You do need a passport to enter other countries. A person leaving the US to escape financial obligations may be denied a passport which would prevent them from legally entering the foreign nation of their choice.