andy roesgen, oak creek, wisconsin, for nbc news. >>> and last night on the rachel maddow show the son of one of the wisconsin shooting victims told rachel about what he calls soft attacks. everyday low level harassment and intimidation against immigrants. >> there's a lot of soft attacks that happen on immigrants. and by soft i mean things that kind of go unnoticed or like a broken window or somebody slashes your tires. essentially these soft attacks, i thought it was just happening to me once in awhile. we had a congregation at our house of well over 200 people that came to pay their respects to my father. and the more stories i would hear from them of these soft attacks, where people thought oh, it's not something we should tell people, it's not something we should just let, you know, push it out there, they wouldn't even tell their friends and family. i didn't tell mine, until they started telling their stories and i started thinking to myself, oh, my god, how many soft attacks are actually happening out there. >> don't miss the rachel maddow show weeknights at 9:00 eastern on msnb

reporting in oak creek, wisconsin, andy roesgen for nbc news. >>> the u.s. economy will likely be the hot topic on the campaign trail this week as president obama heads to connecticut and colorado, and mitt romney begins a multistate bus tour. meanwhile, speculation over romney's choice of a running mate continues to swirl. nbc's clair laka is live for us this morning in washington, d.c. claire, good morning to you. >> reporter: good morning to you, veronica. that is right. well, those tragic shootings at the milwaukee sikh temple that we just told you about quieted the campaign for at least a day, as president obama and republican challenger mitt romney, they expressed their condolences in written statements to the victims and their families. the campaigns are back under way now with an overnight release of the headliners taking shape for the republican national convention in tampa, which is just three weeks away. so far, the seven speakers named include florida governor rick scott, south carolina governor nikki haley and new mexico governor susana martinez