The bottom line is that they need to be convinced of the fact that you would return. That depends on your job, your assets and your family ties in SL etc. At the present time things are not very conducive to obtain visit visas.
I will mention two instances.. Once I took a friend of mine to the US Embassy to get a visit visa for him. This happened in another country. Ahead of us was another Filipino guy whom my friend knew. He went for the interview first and was back. My friend was called in almost immediately after him.
I had a chat with this guy and he said they asked many questions and he told them that one of his uncles is in the US for nearly 15 years, and possibly he might stay depending on the circumstances.
My friend went ahead with his tour plans, and he didn't have anyone over there. The final outcome, my friend's visa was refused , but the Filipino guy got the visa. Can anyone explain the logic?
Second, when I applied for a visit Visa for my son to the US. He just obtained a new passport but had travelled before to the US twice. I requested for just a multiple entry visa (because we usually travel to Canada too). On collection, informed that they issued a visa for him that's valid for the whole 10 years of his passport with multiple entry. Then I went to the Canadian embassy. After a brief look at the details, the lady in the front counter requested me to wait and they did exactly the same in just 30 mins. There seems no rhyme or reason when it comes to these matters. Anything is possible at the discretion of the issuing officer.