The US has again been ranked the world's most powerful country, per US News & World Report analysis.
"It's really high in terms of economic influence, really high in terms of a strong military, and very highly politically influential," he added.
"The most positive thing is a good job market – that contributes to the economy and quality of life," Reibstein said.
As of October 20, there had been 546 mass shootings in the country, according to the gun violence charity Archive.
In comparison with the US, 95% of respondents regarded Switzerland, which was named the best country in the world, as a safe nation.