A letter writer (TNT, 3-1) suggests that interest for a mortgage on a second home should not be a deductible item for income taxes.
One might ask whether mortgage interest paid by any home buyer (first, second or 12th) should be a deductible expense if rent payment by a renter is not deductible.
If the interest deduction is intended to stimulate jobs in the building trades, second homes are probably just about as stimulating as first homes. And homes that are bought and paid for yield no deduction at all to shelter one from income tax.
We must finally ask whether having a roof over one’s head in some way alters the need for the government services that are paid for by income taxes.