There are essentially three main challenges that we feel exist with the STCA in the current environment. One, it's 14 years old. Two, it doesn't reflect the modern technologies we have at our availability to assess and identify individuals, in other words, biometrics. We can exceed this concept of “line of sight” at the port of entry by simple biometrics checks. Three, there is the absolute principle that it relies on the actual agreement, which is that you avail yourself to protection in the first country where you can.
On May 3rd, 2018. See this statement in context.