The Moors, a Muslim people, ruled Spain for many centuries, and as such transferred North African and Middle Eastern genes into the Spanish population. The Mexican population is a mixture of Spaniards and Indians, the latter being descendants of Ice Age era migrants from Northeast Asia. As a result, the physical types of many Middle Easterners are not out of place in Mexico. Middle Easterners will not stand out in a polyglot city like Toronto, but they would be conspicuous in mostly Anglo-Canadian rural Ontario. Additionally, Muslims need not pray in the mosque in Matamoras, if indeed that city has one. If they learn Spanish and Mexican culture, a Muslim terrorist
Both borders represent potential dangers to this country. If we need a wall on our northern border, so be it. Irrespective of the need in connection with Canada, the need clearly exists with Mexico.
Correction. In the last sentence of the first paragraph, I meant to say, "If they learn Spanish and Mexican culture, a Muslim terrorist, they will not stand out in the overall population.