presidential candidate and businessman ross perot. >> ross perot has a distinct personality that is different. the celebrity factor was not there in the same way that it attracts people to trump. 'sere is a power with trump personality that ross perot did not have. the republican party's relationship with trump has been rocky. i broke a story a couple of months ago that he was asked to tone it down on immigration. he has now signed a pledge, but he knows what it is worth. we could see this year what happened with ross perot happened to trump. he talks about wanting to be treated fairly. trump is unpredictable, and could easily run as an independent regardless of the pledge. that is on c-span's key mandate. >> now donald trump holds a rally in san pedro california on