"Between allies, we can, and we should, solve our differences without using threats", French Finance Minister Bruno Le Maire said in defense of the measure just ahead of the final vote in the French Senate.
President Donald Trump ordered on Wednesday an investigation that could lead to tariffs targeting French products under Section 301 of the US Trade Act.
The probe announcement earned bipartisan praise from the leaders of the Senate Finance Committee.
Mr Lighthizer said the U.S. was concerned that the plans would unfairly target American tech companies, and said it would investigate whether it was discriminatory.
The company said last month the change would probably mean Silicon Valley tech giants would pay less in the USA and more in other jurisdictions, in a departure from the longstanding practice of paying most taxes in a company's home country.
"Taxing the turnover before the companies realize a single euro in profit is an economic nonsense.
All this is true, but. what is new and significant is that the world's powers, such as the U.S., China and India, agreed to impose the GAFA tax", said Alain Duhamel, a political analyst.
Rogers, Shaw wireless outage caused dropped 911 emergency calls
BCE Inc. and Telus Corp. customers were unable to connect calls with Rogers customers because of the outage. At the moment they say there is no estimated time of restoration of service.
"France is a sovereign state and it alone decides on its taxation mechanisms and it will continue to do so", he said.
The U.S. Section 301 investigation will determine if the levy poses an unfair trade practice, according to Reuters. The probe could cause the U.S. to inflict tariffs or trade regulations on French goods possibly spiraling the worldwide combat over trade. Currently, the companies pay almost no tax in countries where they have large sales like France.
"We are merely re-establishing fiscal justice".
Discussions about a union-wide tax had come to a standstill however, with Denmark, Sweden, and Finland opposing the tax. This is expected by the end of 2020. The proposed tax was first floated by the European Commission last year but failed to progress, France deciding to pursue the idea this year alone. The UK, Spain, Austria, and France all consequently announced plans to introduce a new levy on digital giants.
U.S. Trade Representative Robert Lighthizer will have as long as a year to examine whether the plan would hurt U.S. technology firms, and suggest remedies.
A number of countries, including the United Kingdom, have also proposed national digital taxes with a broader base.