of congress. arlette saenz is joining us from the white house. that was unusual to say the least. no one was anding those sorts of exchange -- was expecting those sorts of exchange with congressman nancy mace and congressman moskowitz. it was a battle royale with words, luckily it didn't come to blows. has the white house, first of all, responded to what's happening on the hill? i am certain they have seen it. >> reporter: so far we are still waiting to hear from the white house for specific reaction to the fact that hunter biden appeared up on capitol hill. we're waiting to hear whether the white house or president biden had any advance notice that the president's son would be doing this today. ahead of this hearing, this markup, white house counsel spokesperson ian sands pushed back on what they've called baseless attacks by these house gop investigations into both president biden and his son's business dealings. that is something that we've heard repeatedly from the white house. one that the president supports his son, but also this belief