iCloud data is "encrypted" but Apple has the keys and can decrypt it. Apple has been wishy-washy and has actually backed away from announced plans to implement E2E encryption for iCloud with the DOJ whining about wanting backdoors every couple of years.
Burr's previous support of encryption bans is ironic here; maybe now he wishes he hadn't made it politically impossible for Apple to protect his own data: https://www.wired.com/2016/04/senates-draft-encryption-bill-...