Kara Swisher has posted a draft of the letter:
Since the country’s birth, America has been the land of opportunity — welcoming newcomers and giving them the chance to build families, careers and businesses in the United States. We are a nation made stronger by immigrants. As entrepreneurs and business leaders, our ability to grow our companies and create jobs depends on the contributions of immigrants from all backgrounds.
Good.
Update: Hundreds of Comcast employees are currently protesting the ban.