Republican congressman Aaron Schock (Ill.) announced his resignation today amid questions about his spending. 

In a statement, Schock said the following:

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

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 difficult for 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.

The 33-year-old, four-term lawmaker came under scrutiny in recent weeks for his use of donors' private aircraft. 

Last month, a watchdog group called for an ethics inquiry into Schock redecorating his Capitol Hill office in a style modeled after the TV show "Downton Abbey."