Rep. Jesse Jackson, Jr., D-Ill., resigned from Congress on Wednesday following a prolonged treatment for mental health issues.
An aide to House Speaker John Boehner, R-Ohio, told NBC News that the speaker’s office received a letter from the Illinois congressman this afternoon.
"During this journey, I have made my share of mistakes," Jackson wrote in his letter. "I am aware of the ongoing federal investigation into my activities, and I am doing my best to address the situation responsibly, cooperate with the investigators, and accept responsibility for my mistakes, for they are my mistakes and mine alone. None of us is immune from our share of shortcomings or human frailties and I pray that I will be remembered for what I did right."