Monday's White House statement stated that the U.S. would not change its travel restrictions due to the Delta variant of the coronavirus and an increase in cases.The Delta variant is driving cases here at home, especially among unvaccinated, and these are likely to increase in the coming weeks, Jen Psaki, White House Press Secretary, stated in explaining why the border controls will remain in place.She said that nothing is impossible, but she refused to give a time frame for when these measures could be eased.