Answer: He thought americans acted shamefully
Step-by-step explanation:
Sugar plantation owners, mostly white Americans, plotted against Queen Liliuokalani, having US Marines forcing her to abdicate the throne and placing her under house arrest because they believed that having Hawaii annexed by the United States, would make their tariff obstacles disappear.
President Grover Cleveland, a fervent anti-imperialist, thought Americans had behaved shamefully in Hawaii, so he withdrew the annexation treaty to restore Liliuokalani to her throne, but the issue couldn´t be resolved under his government.