Socialist TD Paul Murphy says he doesn't think he would be convicted for alleged false imprisonment of Tánaiste Joan Burton.
Paul Murphy said that the Tánaiste would have to be called to give evidence at any trial he could face.
It has been reported that Deputy Murphy and at least six others could face charges from the DPP in connection with the incident at a protest in Jobstown last year.
He said that any court case would be deeply embarrassing for the Government:
"I mean, how long would these court cases go on for? They have to do them in batches," he said.
"Joan Burton would have to be a key witness, and I think it would do major damage to the Government in reality for them to be seen to be pursuing leading figures of the anti-water charges movement in this way.
"Obviously we would be hopeful about a jury not convicting in that scenario."