You can still buy a Ledger Nano (original design) that required the security card. The new Nano S does not and is a better wallet in all respects, also works with Mycelium on Android. The Nano S is twice the price of the Nano about $64 and worth it.
I expect to use a hardware wallet for long term storage, making very infrequent send transactions. [I will maintain a separate less secure hot wallet containing much less BTC for spending.] With the Ledger Nano, I can keep the "security card" in my safe deposit box (and perhaps a hidden version on my computer) so that if a robber obtains my Ledger Nano and my PIN, he still cannot get my bitcoins. Why is this inferior to the Trezor or Nano S?