Is one terror-like incident by a Muslim immigrant a sufficient argument for the extreme vetting of immigrants from certain countries?

On November 28, 2016, a car ramming attack and mass stabbing occurred at 9:52 a.m. EST at Ohio State University (OSU)'s Watts Hall in Columbus, Ohio. The attacker, identified as Somali refugee Abdul Razak Ali Artan, was shot and killed by the first responding OSU police officer, and 11 people were hospitalized for injuries. The attacker was a Muslim Somali refugee and legal permanent resident of the United States. [source]

The extreme vetting is a policy proposed by the President-elect Donald Trump and includes tough screening of immigrants from "troubled" parts of the world, to get their values and thoughts on certain issues. "That’s why I’ve proposed extreme vetting for immigrants from troubled parts of the world where terrorists live and train, and oppose Hillary Clinton’s 550% increase in the number of refugees from the conflict in Syria. These are tough problems that require tough leadership. We need to get smart and get tough fast so that this weekend’s attacks do not become the new normal here as it has in Europe and other parts of the world." - Donald J. Trump [source]