None of the countries in the proposed ban(s) is a visa-waiver country, i.e. before leaving for the US, all persons visiting from those countries need to obtain a visa from a US consulate either in their home country or at the US consulate in another country, the vetting for which is performed by US officials using US standards. "Not all countries have a reliable vetting process" is not a meaningful sentence because it is not the foreign countries themselves doing the visa vetting, it is the US at its own consulates abroad.