But politicians see immigration as a way to demagogue votes. There is no more visceral issue in American History than race. And immigration. You combine the two, and this is the first time it is really done it is against the irish in the 1850s, but this is the time it really takes gains weight. And it works. The mark of a great talk is when we have to interrupt the questioning for the next speaker. Thank you, andrew. My pleasure. We have more road to the white house Coverage Today with hillary clinton. Shell be campaigning at the Florida State fair grounds in tampa. Cspan will have live coverage of that starting at 4 30 eastern this afternoon. Hillary clinton won the states march primary with more than 64 of the vote. And she takes 141 of floridas democratic delegates to mondays convention. Live coverage from florida begins at 4 30 eastern. Next, on American History tv, history professor rabbi Lance Sussman discusses representative Emanuel Celler a new york democrat who served in the u