| 544 | United States — Certain Measures on Steel and Aluminium Products | 2018/04/05 | China | United States | 詳細內容 |
| 547 | United States — Certain Measures on Steel and Aluminium Products | 2018/05/18 | India | United States | 詳細內容 |
| 548 | United States — Certain Measures on Steel and Aluminium Products | 2018/06/01 | European Union | United States | 詳細內容 |
| 550 | United States — Certain Measures on Steel and Aluminium Products | 2018/06/01 | Canada | United States | 詳細內容 |
| 551 | United States — Certain Measures on Steel and Aluminium Products | 2018/06/05 | Mexico | United States | 詳細內容 |
| 552 | United States — Certain Measures on Steel and Aluminium Products | 2018/06/12 | Norway | United States | 詳細內容 |
| 554 | United States — Certain Measures on Steel and Aluminium Products | 2018/06/29 | Russian Federation | United States | 詳細內容 |
| 556 | United States — Certain Measures on Steel and Aluminium Products | 2018/07/09 | Switzerland | United States | 詳細內容 |
| 557 | Canada — Additional Duties on Certain Products from the United States | 2018/07/16 | United States | Canada | 詳細內容 |
| 558 | China — Additional Duties on Certain Products from the United States | 2018/07/16 | United States | China | 詳細內容 |