we begin with both presidential campaigns getting down and dirty on the low road as the candidates themselves try to stick to the high road. the latest examples, killer tv ad that the obama campaign is using to welcome so-called welcome mitt romney to pennsylvania. and a top romney s surrogates complaint that the president should learn how to be an american. let s go to our white house correspondent, dan lothian, watching all of this unfold. we ve been saying it s getting ugly. reporter: certainly right. the fireworks today. the president was in texas attending a total of fundraisers trying to camp up in the campaign cash. some of those were with small donors, others with big names like tv star eva longoria. but today was more about money. the president was also going after his opponent, mitt romney, for more details about his personal finances. it won t help create jobs. and it won t ease the pain of homeowners stuck in upside down mortgages, but the obama re-election ca