WATCH: Tim Kaine's Accepts Democratic Nomination for VP, Mocking Trump

'Our nation, it is just too great to put it in the hands of a slick-talking, empty-promising, self-promoting, one-man wrecking crew,' Kaine said.

Sen. Tim Kaine accepts Democratic Vice Presidential nomination

Democratic vice presidential nominee U.S. Senator Tim Kaine laid into Republican candidate Donald Trump on Wednesday, describing the billionaire as "a one-man wrecking crew" who cannot be trusted with America's future. 

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"Our nation, it is just too great to put it in the hands of a slick-talking, empty-promising, self-promoting, one-man wrecking crew," Kaine said in a keynote speech to the Democratic Party convention in Philadelphia. 

Democratic presidential nominee Hillary Clinton chose Kaine of Virginia, as her running mate last week, opting for a partner at the Nov. 8 election who has wide experience in public service to draw a contrast with Trump who has never been elected to office. 

Peppering his speech with phrases in Spanish, the bilingual Kaine said he and Clinton were "companeros de alma," or soul mates, and led chants from the crowd of "Si, se puede." ("Yes, we can.") 

Kaine said Trump, a businessman and reality TV show host, was fundamentally untrustworthy. 

Taking a mocking tone, Kaine used the Republican nominee’s own rhetoric against him. "He never tells you how he's going to do any of the things he says he's going to do. He just says, 'believe me.' So here's the question. Do you really believe him? Donald Trump's whole career says you better not," Kaine said. 

In an appeal to disheartened Republicans, Kaine said "If any of you are looking for that party of Lincoln, weve got a home for you right here in the democratic party."

Kaine also suggested that Clinton's support among Republicans is higher than some believe. "Once they made sure no one is listening, republicans say how fantastic a senator Hillary Clinton was," he said, referring to his Republican colleagues in Washington.   

Senior Democrats and former national security figures lined up in Philadelphia on Wednesday to describe Trump as unable to steer America through the dangerous waters of today's world. 

Kaine offered his own comparison of the two opposing candidates: “Hillary has a passion for kids and families. Donald trump has a passion too -- it's himself!” 

Trump has proposed deeply controversial measures such as temporarily banning Muslims from entering the country and building a wall on the border with Mexico to stop illegal immigrants.