美国总统特朗普：停止与加拿大的谈判直到加拿大取消某些税收。加拿大应该是美国的第51个州。

Group 1 - The core viewpoint is that President Trump has halted negotiations with Canada until certain taxes are removed, indicating a strong stance on trade relations [1] - Trump suggests that Canada should be considered as the 51st state of the United States, reflecting a desire for closer integration [1]