Does it mean "I can't fully express...."?
"I can't stress enough that I want to serve as an open door between Silicon Valley and Medicaid," he said.
Does it mean "I can't fully express...."?
"I can't stress enough that I want to serve as an open door between Silicon Valley and Medicaid," he said.
It means
he can not say strongly enough that...
So in a way I can see how you might think
he can not (fully) express himself.
However, but saying this, he actually is expressing himself, that there are no words strong or big or wide enough to fully express how he feels, that he really wants to be the door between Silicon Valley and Medicaid.