A gawar, same question, how many class do u read?
Ur assumption is , if you have red passport you can enter any country without visa, this is wrong . In usa red passport needs seperate visa called a1, a2 to enter the country .

The prevelage is that you will not be interviewed like ordinary people under other visa catotogies . And if you dont have any international criminal records or threat to us your visa is easily granted .

You dnt need work sponsorship for b1 b1 its for h1b . Do some reaearch again n come back.