If you are serious about marring a Russian or Ukrainian lady, you will have to travel to her country sooner or later. Obtaining a tourist visa to the USA is nearly impossible for Russian and Ukrainian citizens. The only way to have a lady visit you is by obtaining a fiancée visa. The US Department of Immigration and Naturalization requires proof that you have met your fiancée in her country prior to applying for a fiancée visa. So, ultimately, you will have to go and see her first.