If possible have your father attend. It is not required however, if there are any questions your father may be able to clear them up at the time of...

You will need to to be admitted to the US as a resident if you are outside the US or adjusted to a resident if within the US. If not sure you have...

For resident status by means of investment you are need to apply under the EB-5 visa classification. This requires and investment of $50000 or...

I was born in Colombia, I got my US citizenship last year, a few month later I came back to Colombia to stay with my Daughter.

As a US citizen you may remain outside the US indefinitely. There is no requirement to ever return.

Can a physical/mental disorder alone (with no associated harmful behavior) bar a person from getting a green card?

Possible but unlikely from your description a medical may be required

How do I bring my girlfriend here from Brazil for marriag?

If you are a US citizen, you can either go there and marry and file for your spouse as an immediate relative or meet in person and file a fiance...

Can I renew my expired green card? category CF1

You need to file to remove the conditions before obtaining naturalization.

I want to know if old petition are looked at when making a new one? And how far back?

Yes they will review prior filings and compare.

My interview officer called me this morning about my case status

If at the time of approval you have been married for more than two years the 10 year card should be issued

My employer, a Japanese company, has obtained an E2 visa for a translator/admin assistant.

as long as misrepresentations are not made the principle risk is denial.