Intel CEO Lip-Bu Tan defended his integrity and vowed to continue leading the semiconductor company through a "critical moment."

President Trump called on Intel Chief Executive Lip-Bu Tan to resign because of his past ties to China, in the chip maker's latest challenge. Get caught up on WSJ's coverage: **Tan was already at odds

The following are some key investments and their connections to Chinese state entities Lip-Bu Tan has made through Walden International.