Search back on phandroid.
There was an article about this.
Someone sent in a complaint to the fcc about Verizon lying when it came to the secure element.
The only difference to date is that AT&T and T-Mobile have not mentioned a reason for the block that I have seen but we all know it's Isis.
What need to happen is Google telling the carriers to shove it... It's Google's store so why let carriers tell them what to do?