Whether the courts reject Trump's travel ban or not, it looks like it might already be having its desired effect: limiting travel from high-risk countries. With so much uncertainty surrounding the travel ban, my guess is that residents of the six listed countries (Iran, Libya, Somalia, Sudan, Syria and Yemen) are simply opting out of travel to the US for fear of being detained, investigated/interrogated, or otherwise inconvenienced during their travels. This is probably just speculation, but my guess is also that potential terror threats might be making note of the increased security precautions that now cover entry into the US.
I personally support both the constitutionality and reasoning behind the travel ban, but what do you all think? I'm sure there are more than a few of you who disagree ;)