Tourist visa for Canada from USA.

[imranali]

Hello Friends,

I applied temporaray resident visa for Canada from Pakistan, and provided invitation letter for business meeting with Canadian company but refuesd. Now I am in USA on B1/B2 visa, and whish to go for business meeting in Canada.
Can I apply tourist visa / business visit visa for Canada in USA ?
What are the requirements to apply tourist visa for canada from USA.
which one is the visa catagory is suitable for me to apply, tourist or business visa for Canada?

Thank you very much.

Imran.