[4] He is the youngest person to hold the position of President of the Chamber of Deputies, being elected in April 2020 at the age of 32.
The following year, Paulsen won the primaries and became a congressional candidate for the 49th district of the Araucanía Region.
Paulsen presided an investigative commission regarding the University of Art & Social Sciences (ARCIS) and its accreditation process.
[7] He was also part of an investigative commission regarding public spending on primary health care and hospital infrastructure.
[10] In a 2014 interview with The Clinic, Paulsen stated that he was against same-sex marriage but in favor of civil unions.