Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.

Singapore held Alice Huang's passport for 8 months and asked the U.S. to help investigate her firm's suspected Nvidia chip sales, but received little help, sources say.