President Joe Biden has broken his silence on Vice President Kamala Harris‘s first major decision now she is the 2024 Democratic presidential nominee.

“Kamala Harris has made a great decision in choosing Governor Tim Walz to be her running mate,” Biden wrote on social media on Tuesday. “I’ve known Tim Walz for nearly two decades, first during his time in Congress and as Governor. A husband and father, he’s been a school teacher and a high school football coach. He served for 24 years in the Army National Guard and became the highest ranking enlisted soldier to ever serve in Congress. As Governor, he’s been a strong, principled, and effective leader.”