The transport minister has accused him of behaving like "road traffic terrorists"
Independent Kerry TD Danny Healy-Rae says he is taking legal advice over comments made by Transport Minister Shane Ross.
Minister Ross accused him "and his gang" of behaving like "road traffic terrorists".
Mr Healy-Rae said the minister's comment likening him to a terrorist was 'hurtful'.
The Independent Kerry TD has been a vocal opponent to proposed new drink-driving laws, alongside a number of other TDs including Tipperary's Mattie McGrath.
If passed, the Drink Driving Bill would see an automatic driving ban for first-time offenders detected at the lowest limit.
Currently, drivers caught with alcohol concentrations of between 50mg and 80mg are facing a fine and penalty points, but no ban – provided it is their first offence.
Last week, Deputy Healy-Rae pleaded with Minister Ross to 'leave the people of rural Ireland alone'.
He suggested: "I certainly don't condone drunk driving, but a pint and a half never made anybody drunk."
Shane Ross, however, is calling on Deputy Healy-Rae and other opponents of the bill in the Dáil to support the proposed legislation.
He said: "I'll take this opportunity to Danny Healy-Rae and his gang to stop the filibuster.
"They're behaving like road traffic terrorists. There's a kind of guerrilla warfare going on, which is costing lives."
The transport minister added: "I'd appeal to those very, very few people left opposing this in the Dáil to stop the filibuster, to stop the guerrilla warfare, and to let this legislation through... which is the will of the Dáil."