Not because I said so; concentrate on the technicalities instead.
Tomahawk cruise missile is a jamming-proof design. Its on-board GPS guidance has anti-jamming mechanism. However, for the sake of argument, let us say that Tomahawk's GPS guidance system somehow malfunctions or jammed during the course of its flight-path towards a target, 3 additional guidance systems are on-board and would kick-in one at a time and/or simultaneously. Additional guidance systems are like a series of fail-safes for the missile.
https://www.technologyreview.com/s/423363/how-cruise-missiles-would-beat-gps-jammers-in-libya/
Therefore, it is virtually impossible to jam even a single tomahawk cruise missile. The only viable method to stop it is by intercepting it but easier said than done.
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