Should you use Donald Trump as your brand ambassador?

Using AJ's knowledge of PR and marketing and Robyn Simms experience at Square Root Soda, Susie wants to understand the pros and cons of using a brand ambassador to promote your foodie product. Should you use a brand ambassador such as Donald Trump, Gary Lineker or Wallace and Gromit or hire an influencer? Why has Square Root teamed up with many brands and people such as Good & Proper Tea and Sober Girl Society and how important are these collaborations to overall sales?