Counterpoint: A CEO should stay out of personally calling senators and let them decide on their own as is their job responsibility. It's unsolicited spam from a biased source. Stick to making the latest iPhone, not the latest policy it's inappropriate.
Senators aren't personally calling Tim Cook requesting what they want to see in the newest device, at least as far as I know. And if they did, that too would be inappropriate.
Do you have a problem with citizens contacting their government officials?