BEIJING, March 21 -- China warned the United States not to endorse observer status for Taiwan in the International Criminal Police Organization (Interpol) on Monday.

U.S. President Barack Obama signed a bill on Friday which requires the U.S. secretary of state to develop a strategy to obtain observer status for Taiwan in Interpol.

"Interpol is an inter-governmental organization made up of sovereign states, whose charter has clear stipulations on its membership," Foreign Ministry spokesperson Hua Chunying said at a regular news briefing.

China has always handled issues relating to Taiwan's participation in international organizations in line with the one-China principle, Hua said.

Indeed,the Chinese mainland and relevant parties have made a"practical arrangement" for Taiwan to engage in cooperation with Interpol in fighting crime, which has proved to be effective, Hua said.

Reiterating that the Taiwan issue is China's domestic affair, Hua demanded the U.S. abide by the one-China policy and the three China-U.S. joint communiques.

"The U.S. should not speak for Taiwan to participate in international institutions [as a sovereign state], which otherwise will disrupt cross-Strait relationship and China-U.S. ties," the spokesperson added.