F4 Half Brother (paternal side), and three siblings (maternal side)

[POA 178]

I have been posing a lot for F4 lately.

 

This time, I wanted to ask for your expertise on the eligibility. I have a super blended family so now, I am in a bit of a pickle.

Background: All my siblings are half-siblings, and all of them were born out of wedlock. I am the only one who's considered legitimate.

 

My older brother (paternal side): Based on the instruction, I need to submit his mom and my dad's marriage certificate for the documentation. 

Issue: They don't have one. 

Question: Does this mean he is not eligible for F4?

 

My younger three siblings (maternal side).

Issue:  Their birth certificate shows a date of marriage between my mom and their dad. But as you may already know, in the Philippines, they were able to put that even they were not married. My mom was a widow when she met my step dad. They didn't get married but they parent the three.

Questions:

1. Will the date of marriage in my younger siblings' birth certificate cause an issue in the immigration process since there is no marriage?

2. Do they qualify for F4 as illegitimate?

 

Issue: In my birth certificate and marriage certificate, my mom's name does not have a middle name. While with my younger siblings' birth certificate, she has a middle name.

Question: Will this be considered discrepancy and will this cause issue with their immigration?

 

Any help/information is appreciated.

 

 

Edited August 27, 2020 by POA