PIJIP has a great post on the mounting challenges to ACTA, including concerns expressed at the WTO and by dozens of law professors.

Canadian Heritage Memorandum, December 8, 2020, ATIP A-2020-00498
Bill C-10
Australia To Hold Three ACTA Briefings, Canada Still MIA
The Australian Department of Foreign Affairs and Trade has announced plans for three information sessions on the ACTA text in Canberra, Sydney, and Melbourne. Canadian officials have yet to provide any public briefings.
Law Professors Call for Halt to ACTA
Over 70 law professors have signed a public letter calling for a halt to the ACTA negotiations, focusing on the secrecy of the negotiations and the attempt in the U.S. to approve the agreement without Congressional involvement.
ACTA in the UK
Andres Guadamuz has an insightful post on the likely impact of ACTA in the UK.
Where U.S. Law is Inconsistent with ACTA
KEI has compiled an instructive list of areas where the ACTA text appears to be inconsistent with U.S. law.






