The US travel industry is warning that a broader application of the Trump administration’s visa bond policy could discourage international visitors and hurt the country’s economy. “There are already rumblings of expanding this program to additional countries where visas are required, perhaps all countries where visas are required,” Freeman told Reuters. He warned that such an expansion could have an “extraordinarily detrimental effect” on the US economy and travel industry. Nigeria is among the countries listed by the State Department as subject to visa bonds. The administration says the policy targets countries with high visa-overstay rates or shortcomings in information-sharing, vetting and document security.