Obama: Trump and Cruz are doing Democrats a 'favor' in election campaign
"In 10 months, I will no longer be president. But in 10 months, I will - contrary to Mr. Trump's opinion - still be a citizen of the United States."
Republican US presidential candidate Donald Trump (L) talks with rival Ted Cruz during a commercial break in the midst of the Republican US presidential candidates debate, March 10, 2016. (photo credit: REUTERS)ByROBERTA RAMPTON/REUTERSUpdated: