Washington (CNN) Rep. Susan Davis of California, the second-highest-ranking Democrat on the House Education and Labor Committee and the House Armed Services Committee, will not seek reelection in 2020, she announced on Wednesday.

Davis will retire at the end of her current term after representing California's 53rd District since 2001. She said her decision was "very difficult" and "represents a desire to live and work 'at home' in San Diego."

"This is tough for me. There are always compelling issues and challenges that have encouraged me to pursue each new election cycle," she said in a letter to her constituents . "Most touching has been the appeals to stay on and go yet another round with the hope that I would always be your representative. It doesn't get any better than that!"

Davis said she does not know what she will do next, but knows "there are many ways to serve our community."

House Speaker Nancy Pelosi, a fellow California Democrat, said Davis is a "significant leader of our country" and praised her involvement in Congress.

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