Stock Markets Exposed - can a non us resident trade in the us stock market? and how taxes can be paid?

can a non us resident trade in the us stock market? and how taxes can be paid?

can some one in a foreighn country trade us stocks. and does that one need to pay taxes and how? thank you

if your out of the country you dont have to pay taxes, unless you have a tax id number and you can buy stock through your bank
The gains realized by a non-resident alien or foreign corporation from the sale of stocks and other securities is not subject to US tax. The dividends are subject to 30% withholding unless the foreign person is a resident of a country that has a treaty with the US lowering the withholding rate. See Section 871(a)(2) of the Internal Revenue Code.
Yes a non us resident can trade in the us stock market. Taxes will be NRA ( non-resident alien tax) If the security is non US sourced income then he/she will have to pay the tax unless there is a DTT ( double taxation treaty) with the persons home country and US is in place.