Rep. Aaron Schock speaks to the media on March 9 in Chicago. (Nancy Stone/AP)

Rep. Aaron Schock (R-Ill.) announced Tuesday that he's resigning from Congress, after weeks of headlines about spending from his taxpayer-funded account for official expenses.

Today, I am announcing my resignation as a Member of the United States House of Representatives effective March 31st.

I do this with a heavy heart. Serving the people of the 18th District is the highest and greatest honor I have had in my life. I thank them for their faith in electing me and letting me represent their interests in Washington. I have given them my all over the last six years. I have traveled to all corners of the District to meet with the people I’ve been fortunate to be able to call my friends and neighbors.

But the constant questions over the last six weeks have proven a great distraction that has made it too difficultfor me to serve the people of the 18th District with the high standards that they deserve and which I have set for myself.

I have always sought to do what’s best for my constituents and I thank them for the opportunity to serve.

From February: Aaron Schock doesn't want to talk about his "Downtown Abbey"-inspired office.