Can I get a Green card from a Family Member of a U.S. Citizen under the TPS?

Unfortunately, the sibling category takes the lowest on family-based immigration, so while your sister can petition for you, it will take more than...

Is it possible to change a B1/B2 visa to an immigrant visa?

You shouldn't confuse these visas as each one has a purpose and limitations. Fiancé visa is for unmarried people and is processed at a us...

What visa can my mother apply for?

Depends on: 1. What papers she obtained in 87; 2. How long she's been out of the us; 3. Reasons she left (voluntarily or deportation).

Will getting cash aid welfare affect my deferred action application?

Her application for aid won't effect your eligibility for DACA.

Can a person who has not obtained a U.S Certificate of Naturalization still petition her mother using her U.S Passport?

Yes

Is it possible for one to apply for K3 visa while visiting US?

The k-3 visa is processed at us consulates abroad. The green card application can be filed in the us, but there can be issues relating to...

DS 230 question #32 " last 10 years employment?" If I have been retired for 20 years already, should I put N/A?

That's correct - retired from when to when.

Immigration

I agree with my colleague. We'd be doing nothing more than speculating. Your friend seems to be doing the right thing -having a lawyer and...

DUIs plural? Anything else?

How long does it take to start and finish the K-1 process

About 7 months, assuming no mistakes or delays. Highly suggest you hire a lawyer to diminish the likelihood of these human-related errors. My...