WASHINGTON - Representative Patrick Kennedy said he’s “feeling healthy and strong’’ and plans to return to Congress today after receiving treatment at a Maryland addiction treatment center. Discuss COMMENTS (18) The Rhode Island Democrat said yesterday he was looking forward to returning full time to his congressional duties. “The support and words of encouragement I have received over the past few weeks certainly help to support my efforts in recovery, which I take seriously every day,’’ Kennedy said in a statement. The congressman, who has struggled with depression, alcoholism, and addiction for much of his life, checked into the Father...