In 1999, Gemayel was influential in establishing what was then known as the "Kataeb Base"– a platform of students peacefully fighting to end Syria's occupation of Lebanon.
[11] Early in 2009, the Phalange (Kataeb Party) announced that it struck a deal with Michel Murr for a political alliance in the Matn District in the Lebanese parliamentary elections that were to be held in June.
They declared that Samy Gemayel would run for a seat in parliament as one of two Phalangists hoping to represent the Matn District of Lebanon, the other being Elie Karami.
"[13] Gemayel has also stated that the Phalange would not make any agreement or reconcile with the Free Patriotic Movement as long as the latter continued to stand in support of Hezbollah bearing arms.
He presented several draft laws related to local governance and decentralization, neutrality of Lebanon, women rights, free education, and anti-corruption.
In addition to ensuring free textbooks for all students in public schools starting September 2012, Gemayel is primarily known for his success in abolishing honour crimes in Lebanon through a law proposal he presented before the Parliament in 2011.
In addition, he has written several articles for local and international bulletins and newspapers on topics related to the permanent crisis in Lebanon, cultural pluralism, federalism and decentralization, collective memory and the foundations of genuine national reconciliation.
Samy insisted that given the situation in which they were facing both PLO militiamen and Syrian troops, the Phalange had no choice but to accept aid from Israel.
Gemayel also said that Lebanese–Syrian relations could only be "perfect" once Syria releases the Lebanese detainees in their prisons and settles its border disputes with Lebanon.
He has also rejected the political concession in the same year which led to the election of President Michel Aoun into office – the main Christian ally of Iran-backed Hezbollah - and also refused to participate in the government due to the imbalance in favour of the Hezbollah-led March 8 camp.
Gemayel and the Kataeb Party joined and supported the uprising, calling for the resignation of the government and for early parliamentary elections.
In August 2020, and 4 days after the devastating Beirut Port Explosion that caused at least 204 deaths, 7,500 injuries, and US$15 billion in property damage, and leaving an estimated 300,000 people homeless, Gemayel announced the resignation of the party's three MPs from Parliament during the funeral service of Kataeb Party Secretary-General Nazar Najarian, who died as a result of his injuries from the explosion.
[1] In December 2024 he made an interview and stated that Hezbollah lost its power and right to be called a resistance movement, once it took part in supporting the Syrian government.