As much as most of the rest of the US wishes that Oakland was a separate country ... no, you do not.
If you're not a US citizen, though, you should keep your passport with you at all times, just in case you need to prove that you're in the country legally. There's nothing special here about either Oakland or Las Vegas, it's just a good general rule.
No.
Yes you do, if you plan to fly. And aren't a US citizen.
No. You need you passport.
yes of course you need a passport to fly to las Vegas you need a passport to fly anywhere! No you don't if you live in the United States you don't need a passport to fly to Las Vegas.
You need a passport
You don't need a passport to get into freeside.
If you are not a Filipino Citizen then you need to do so but if you are a Filipino, no need for passport for the travel.
You need a passport to travel almost anywhere that is not within your country.
no. you don't need a passport
Do you need a passport to travel to Barcelona
No you do not need a passport to travel from the us to puerto rico. you do need a visa.
If this is a domestic travel then you do not need to show your passport, if this is an international travel, meaning you are not a citizen of china, then you need you passport.