An on-going feud between President Donald Trump and Sen. Bob Corker heated up once again Sunday morning.

Around 10:30 a.m. the President published a series of tweets targeting the Tennessee Senator.

“Senator Bob Corker begged me to endorse him for re-election in Tennessee. I said ‘NO” and he dropped out (said he could not win without my endorsement). He also wanted to be Secretary of State, I said “NO THANKS.” He is also largely responsible for the horrendous Iran Deal!”

The President continued "…Hence, I would fully expect Corker to be a negative voice and stand in the way of our great agenda. Didn’t have the guts to run!”

Corker addressed the comments with his own tweet about an hour later.

“It’s a shame the White House has become and adult day care center. Someone obviously missed their shift this morning.”

Corker announced in September he would not run in re-election in 2018.

Trump tweeted later in the afternoon Sunday saying Corker only helped with the Iran Deal.