LVN/LPN Certifications in ER setting

Hi, I am in LVN in a fast pace ER located in San Antonio, Texas. I recently requested to attend the TNCC/ENCP/ACLS classes. My hospital educator informed me that I was not able to take the ACLS course, due to that it was not part of my job requirement. Ok, then she told me that I could take the TNCC/ENCP classes, but not get certified, because the ENA does recognize LVN's as qualifing for the certification. That's not good.

My questions is this, if i work in the ER and deal with adult and pediatric trauma, and care for cardiac patients, then why is it that I can't get trained and certified to provide the best care possible regardless if I am an LVN or RN?