From NRA-ILA:

In an attempt to attack an NRA-ILA article, Watts tweeted: “They’re proud of this? ‘In response to claims that ‘armor piercing ammunition’ could penetrate police body armor, … the @NRA stepped up, once again, and performance-based ammunition bans have been repeatedly defeated at the federal level.’”
We responded by pointing out “that all centerfire rifle ammunition pierces soft body armor” and asked Watts if she wanted “to ban all rifle ammunition used for self-defense, sport, and hunting?”