Access to a number of US think tank websites is blocked in China, according to an analysis done by Think Tank Watch using the Comparitech database.
Think tanks that are blocked in China include: Brookings Institution, Wilson Center, Council on Foreign Relations (CFR), Cato Institute, and the Hudson Institute.
Ones that are accessible in China include the Carnegie Endowment for International Peace, Heritage Foundation, Center for Strategic and International Studies (CSIS), Hoover Institution, Stimson Center, American Enterprise Institute (AEI), Center for Global Development (CGD), and the German Marshall Fund (GMF).
US Vice President Mike Pence postponed a speech planned for June 24 at the Wilson Center (one of the think tanks blocked in China) that was reportedly going to focus on criticizing China's human rights record. The speech had already been postponed from June 4, the anniversary of the Tiananmen Square massacre.
The Hudson Institute, another think tank blocked in China, has been a popular anti-China platform in the Trump Administration. As Think Tank Watch has previously noted, renegade Chinese billionaire Guo Wengui met President Donald Trump's former strategist Stephen Bannon after a Hudson event.
The Center for Global Development was among the think tanks recently chided by China for spreading what it says are "false accusations" against its Belt and Road Initiative (BRI), but one can still view CGD's website in China.
Although the US does not block any Chinese think tank websites, it has been blocking Chinese scholars from visiting the US over spying fears.
China has established a think tank presence in the US, helps fund a number of think tanks there, and has various other formal relations with US think tanks.