Origin of fallback
Examples from the Web for fallback
He could, as a fallback, partner well with Big Squish-Em, Dis-Em Chris.
A fallback position, adding an Eisenhower statue to the existing World War II Memorial, is already being discussed.
After realizing how difficult this plum post would be, “Biden” writes that he “wised up and settled on my current fallback plan.”Speed Read: 11 Best Bits from Joe Biden Satire ‘The President of Vice’|Caroline Linton|January 19, 2013|DAILY BEAST
Their fallback is a series of small-bore bills like more visas for high-tech workers.
In other words, preserving the deduction is a fallback position.