Second passport
I have two US passports, both valid and official. Because I travel overseas so much, I often have my passport tied up in getting a visa somewhere, so I have the second passport available. This gives me some breathing room. It’s also useful if you are traveling to countries that don’t recognize Israel and you have an Israel stamp in your passport. To get a second US passport you apply as if you are renewing your passport by mail and add a letter requesting a second passport. Instructions here. — KK