Research conducted by Perplexity AI using the following sources:

• Trump signs Russia sanctions bill, Moscow calls it 'trade war'
• President Trump grudgingly signs Russia sanctions bill
• Trump signs Russia sanctions bill, but makes clear he's not happy about it
• U.S. Sanctions on Russia
• Russia Sanctions Act Is Enacted
• Statement by President Donald J. Trump on Signing the Countering America's Adversaries Through Sanctions Act