Federal officials reply that they have been plagued by dubious or fraudulent claims.
But his dubious claim to fame was a 21-match losing streak - a Tour record - in 2000.
The dubious claim from a position of authority worked in the long run.
Which means that even if I reserve judgment over her more dubious claims, she's earned the benefit of the doubt.
Most other dubious claims did not achieve majority acceptance in the battleground states.
The estate also settled $12,500 each for two women with dubious claims to a share in the prize.
And then there's her dubious claim that Feminism is at the root cause of the "problem."
The early days of car wax advertised some dubious claims.
A small constellation with dubious claims to a separate identity.
After Marvell's death she laid dubious claim to having been his wife, from the time of a secret marriage in 1667.