Jonathan Tamari

Comcast is proud of its philanthropy. But as the company funds worthy causes, it also gives to groups with high-powered supporters who can help, or hurt, its ambitious business plans.

Over the last two years, Comcast has given $1.64 million to charities affiliated with lawmakers or executive-branch officials, according to its lobbying disclosures. Comcast donated $16.8 million from its charitable foundation in 2013, along with $415 million in corporate cash and other aid, such as public service announcements, Comcast spokeswoman Sena Fitzmaurice said.