How long can a Russian tourist stay on a US VISA?

Nobody can tell you this. The CBP Officer at the port of entry makes this determination. The maximum is 6 months.

Is this a person you met on the internet in a dating/romance chat room or web site? There is incredible fraud associated with this type of activity. Normally the female "proves" she has a visa by sending you a copy. It's fake. The usual M.O. is to request BTA (Basic Travel Allowance) from you promising to give you the money back upon arrival in the USA. There's no such thing as BTA.

http://www.allrussian.com/info/russian_dating_scam...

From the US Embassy in Moscow:

The growing popularity of Internet romance has led to the growth of fraudulent online activity in Russia directed at Americans and others outside Russia. The United States Embassy in Moscow is receiving increasing numbers of complaints from American citizens who have been lured into online relationships via false internet profiles. Often, these are men pretending to be women who make contact with Americans “usually men“ over the Internet through dating websites or chat rooms. The fictitious person then seeks to create a virtual relationship through the exchange of photos and e-mails. At some point s/he begins to ask for money, frequently asking that it be transferred through wire services. S/he commonly states that the money is needed to help resolve a family tragedy or arrange for a trip to the United States. A copy of a fraudulent U.S. visa is sometimes attached to prove good intentions. The U.S. Embassy in Moscow urges Americans to exercise caution many U.S. citizens have lost hundreds, and even thousands, of dollars.

There are common factors in these Internet scams. Scammers usually misinform the Americans about travel expenses and/or they inflate the cost of the expenses that do exist. They lure the American in with e-mails, pictures, phone calls, fake visas, and even e-mails from fake travel agencies in an attempt to prove their good intentions. Typically, something happens and they "can't leave the country." They either "are hospitalized for an injury" and a "member of the family" contacts the American citizen requesting money, or a "member of the family" needs an emergency operation and needs money. Sometimes they are stuck at the airport and are not allowed to board until they can show they have a certain amount of dollars to cover their expenses while in the U.S. Some claim to have been robbed of the money that was sent or claim that they are detained at the airport. Again, their purpose is not to immigrate to the U.S., but to get as much money as possible from the victim. Most of these scammers are actually men who are paying women a minimal fee to sit and pose for pictures and pick up the money at an office of a money transfer agency.

Please keep in mind that, while the U.S. Embassy in Moscow does not have the authorization to initiate investigations of these scams, the Fraud Prevention Unit can verify the authenticity of any U.S. visa via e-mail at FPMM@state.gov.

THE DURATION OF THE RUSSIAN TOURIST VISA CANNOT BE LONGER THAN ONE MONTH! When entering Russia as a tourist, you may be also required to present the copies of your tourist confirmation, hotel voucher and your return ticket with a fixed date of departure from Russia at the border check point. We can do next or same day processing only if the volume of work technically permits. Visa processing starts only after the complete required set of document is submitted. When having received your visa please check it for mistakes (passport number, date of birth, validity) and, if necessary, return it to the Consulate for corrections. The Consulate will not be responsible for any mistakes in the visas, which were not brought to our attention prior to your departure from the USA. Please, note that visas cannot be changed or extended. If your travel plans changed after the visa issuance you have to reapply for a new one. Any visa applicant may be interviewed by a consular officer if necessary. Processing time, requirements and fees are subject to change without notice.

Moscow is among the greatest cities in the world. Is just a town that has developed fast in recent decades, and, as a result, comprises high-rise suburbs surrounding a comparatively lightweight old hub with lots of fascinating historical architecture. The main place of Moscow could be the Red Square that's been for ages, one's heart and soul of Russia. Here, you can go to the Century St. Basil's Cathedral, one of the most famous bits of structure on earth and the constructivist chart of Lenin's Mausoleum. Red Square happens to be a rich invest designs of Russia's turbulent and stimulating past.

That visa can be for many reasons and lengths of time, have a look here to see if you can get a better one; http://www.state.gov/travel/ or here; http://www.uscis.gov/portal/site/uscis/menuitem.56... to see which visa serves you better. The visa waiver is the most simple on which lasts for 90 days.

180 days is the normal max ... they can give less

getting the visa is the hard bit