Queries regarding Interview questions

I am working in ABC company in India which is a sister company of the firm in US which has filed my petition and want me to join the parent company in USA.

My queries are that what should be my apt answer for the following questions if the interviewer asks:

  1. Why do you want to go USA?

  2. After the conclusion of your visa, what do you plan to do?

Please help.

  1. Career growth, Global Exposure and Better Salary

  2. Work for my Employer

Thanks Rana.
Please elaborate the 2nd answer, that will be a great help.