For how long can I, a US permanent resident, work for my American employer, remotely from Brazil, without violating US law?

My concern is not tax issues. But, a green card holder must reside in the US. With long absences outside the US you must apply for a Re-Entry Permit.

How soon can I travel to the US on a k3 visa?

The K-3 visa has long processing times and you cannot come to the US until the I-130 is approved and the consulate processes your visa. You might...

I-907, I-140 and I-485 (CA resident) to the Texas Lockbox

The filing with an I-907 does not go to a LockBox.

How do i apply for social security number. and whats the usual process time until i get it?

When admitted in the US with an immigrant visa the lawful permanent resident can obtain a SS# in a few days. If in the US and applying for lawful...

How good are the chances of a small company sponsor a foreign worker for a work visa/green card?

Generally, a small company may sponsor a foreign candidate for temporary and permanent employment.

If I get married in mexico with my fiance can I still petition for may parents and my wife in mexico at the same time?

A US citizen may petition parents and spouse at the same time with income sufficient to provide Affidavit of Support I-864 or with a joint sponsor...

CPT time is not counted against H1. CPT may be counted against OPT. L-1 time is counted against H1B time. You must be outside the US 1 year to...

Filing green card for mother

The timelines are about the same. The advantage of being in the US is being here. There are myriad issues to be aware of best reviewed in a...

RFE on H1B ammendment for previous employment

We would not recommend you travel outside the US. Your employer should carefully respond to the RFE to avoid denial.

Should an Iranian individual wait to apply for a green card until after the immigration/muslim ban is lifted?

the short term 7 country travel ban does not impact green card processing and one shouldn't wait to file.