about one fifth of the population
Yes, US citizens can travel to Singapore.
Yes, US citizens can travel to Singapore for up to 90 days without a visa for tourism or business purposes.
Yes, US citizens do not need a visa to visit Singapore for stays of up to 90 days for tourism or business purposes.
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The question is far too broad. There are many, many thousands of laws the US citizens have to abide by.
How many adults live in the United States of America
this sucks
California is about 13 hours away from Singapore.
Of course you need a visa to go to Singapore. Alternately you can get a visa on arrival for less 30 days if you have the confirmed return ticket. Otherwise you need to apply for Singapore visa.
Puerto Rico is a US Territory and its inhabitants are US Citizens! So, if they are US Citizens, any US citizen can live in Puerto Rico.
Check the related link. As of Jan 2007... Legal non-Citizen Residents: 18,870,000 Illegal non-Citizens Residents: 11,780,000
Yes, there are many US citizens who have cars, but there are many US citizens (like those who are children, those who can't afford cars, etc.) who do not have cars. There are over 250 million registered motor vehicles in the US.