How to Immigrate to the United States

punjab1 asked:

When I filed a petition I was a Green Card holder. Now I am a U.S Citizen. I have update my case . sent copy to US consulate .
my kids and wife appear for interview , consulate officer told to my wife ,>>>>> your husband is citizen now .
you have to file case again . my kids age is 4 other is 1 years old .
so is kids now US CITIZEN NOW , ? WHAT IS NEW PROCESS FOR VISA NOW ?
which visa category is now how they can travel to US .
THANKS
so what is mean ?

nitsrek asked:

Can a US citizen just cross the border and hang out in Canada (Quebec, Toronto, Vancouver) for as long as they want, provided they keep renewing their visa?