[1][2][3] Poblete previously served as the Chief of Staff of the House Foreign Affairs Committee, where she worked for close to 20 years.

[7] According to Poblete's official State Department biography, "During her tenure on the Foreign Affairs Committee, Poblete worked on virtually every regional and functional issue and spearheaded scores of legislative efforts to advance a range of U.S. foreign policy and national security priorities, including laws designed to counter proliferation, to hold violators accountable, and to compel the disarmament of rogue states such as Iran, North Korea, and Syria.

During her tenure on the Foreign Affairs Committee staff, Poblete worked on virtually every regional and functional issue, assessing security challenges and developing a range of policy responses.

Some notable examples resulting in verifiable efforts to address the wrongs include: holding accountable American contractors and United Nations peacekeepers involved in sexual abuse in Bosnia and Africa; halting U.S. funds to the International Atomic Energy Agency (IAEA) from contributing to the provision of IAEA technical assistance to Iran, Syria, and North Korea while these pariah states were subject to a broad range of U.S. and multilateral sanctions; investigating and holding accountable those responsible for the illegal transfers by the World Intellectual Property Organization of U.S.-origin technology to North Korea and Iran.

Her doctoral dissertation focused on: "The Viability of Sanctions as Effective Foreign Policy Tools: The Cases of Iran and Syria.