diff --git a/personal/k-1_visa.md b/personal/k-1_visa.md
index 172e61e..5f41016 100644
--- a/personal/k-1_visa.md
+++ b/personal/k-1_visa.md
@@ -335,4 +335,64 @@ Contact the **National Visa Center (NVC)**:
   Portsmouth, NH 03801-2909
   ```
 
-Would you like this integrated into the I-129F reference as a single structured manual or kept as a standalone sibling sponsorship module? I can also generate it as a PDF or prepare a visual workflow for both.
+# 👪 **Petitioning to Bring Parents to the U.S. as Permanent Residents**
+
+---
+
+## 📌 **Eligibility Overview**
+
+Only **U.S. citizens aged 21 or older** may petition to bring **parents** (mother, father, step-parent, or adoptive parent) to the U.S. as **lawful permanent residents**.
+
+> ⚠️ **Green Card holders cannot sponsor their parents.**
+
+---
+
+## 🗂️ **Required Documentation by Parent Type**
+
+| **If you are a U.S. citizen and your…**                                                      | **You must submit…**                                                                                                                                                                                                                                                             |
+| -------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| **Mother lives outside the U.S.**                                                            | - Form I-130<br>- Your birth certificate (showing both your name and your mother’s name)<br>- Proof of citizenship (U.S. passport or naturalization certificate)                                                                                                                 |
+| **Father lives outside the U.S.**                                                            | - Form I-130<br>- Your birth certificate (showing your name and both parents’ names)<br>- Proof of citizenship<br>- **Parents’ civil marriage certificate**                                                                                                                      |
+| **Father is biological, but you were born out of wedlock and NOT legitimated before age 18** | - Form I-130<br>- Your birth certificate (with father’s name)<br>- Proof of citizenship<br>- **Evidence of a bona fide relationship before age 21 or marriage** (e.g., financial/emotional support)                                                                              |
+| **Father is biological, born out of wedlock but you WERE legitimated before age 18**         | - Form I-130<br>- Your birth certificate (with father’s name)<br>- Proof of citizenship<br>- **Evidence of legitimation** (e.g., parent marriage, state/country legitimation law)                                                                                                |
+| **Step-parent**                                                                              | - Form I-130<br>- Your birth certificate (with names of your birth parents)<br>- Civil marriage certificate between birth parent and step-parent (must be **before your 18th birthday**)<br>- Proof that all prior marriages were legally terminated (divorce, death, annulment) |
+| **Adoptive parent**                                                                          | - Form I-130<br>- Your birth certificate<br>- Proof of citizenship<br>- **Adoption decree** (must be completed **before your 16th birthday**)<br>- **Statement of cohabitation** showing dates and places lived together<br>- Any legal name change documents                    |
+
+> 🔁 If **names have changed**, include legal name change documents (e.g., marriage certificate, court decree, adoption paperwork).
+
+---
+
+## 🔁 **After Filing Form I-130**
+
+### ✅ **If Approved:**
+
+* If parent is **outside the U.S.**, they will receive instructions from the **U.S. consulate** for **immigrant visa processing**.
+* If parent is **already inside the U.S.**, they may **adjust status** by filing **Form I-485**, possibly **concurrently** with I-130.
+
+➡️ See [Concurrent Filing of Form I-485](https://www.uscis.gov/forms/all-forms/concurrent-filing-of-form-i-485) for more.
+
+---
+
+## 💼 **Employment Authorization (Work Permit)**
+
+| **If Parent is…**                                    | **Work Authorization Info**                                                                               |
+| ---------------------------------------------------- | --------------------------------------------------------------------------------------------------------- |
+| **Admitted on immigrant visa (consular processing)** | No separate work permit needed. Passport will be stamped to authorize work until Green Card arrives.      |
+| **In U.S. adjusting status via Form I-485**          | Can file:<br> - **Form I-765** for Employment Authorization<br> - **Form I-131** for Travel Authorization |
+
+---
+
+## 🧒 **Important Note on Siblings**
+
+* **Minor children of your parents (i.e., your siblings)** **cannot** be included in the same petition.
+* After your parent receives a Green Card, **they** may sponsor their children.
+
+➡️ See: **[Bringing Siblings to the United States as Permanent Residents](#)** (cross-reference with sibling section)
+
+---
+
+## ❌ **What if My Petition is Denied?**
+
+* The **denial letter** will explain your **right to appeal** and **filing deadline**.
+* File **Form I-290B**, Notice of Appeal or Motion.
+* The appeal is reviewed by the **Board of Immigration Appeals (BIA)**.