US President Joe Biden’s Secretary of State Tony Blinken and White House national security adviser Jake Sullivan believe that China poses the "greatest long-term national security threat to the United States," Republican Rep. Michael McCaul told Fox News after speaking with the officials, but McCaul said they will have a "different approach" to China than the Trump administration, Fox News reported.

McCaul, the top Republican on the Foreign Affairs Committee of the US House of Representatives, during an interview with Fox News, described his conversations with Blinken and Sullivan.

"When I spoke to Secretary of State Blinken and national security adviser Jake Sullivan, they both told me that they believe China poses the greatest long-term national security threat to the United States," McCaul said.

During an interview on MSNBC earlier this month, Blinken said there is "no doubt that China poses the most significant challenge" to the US, but he said the Biden administration must approach China "from a position of strength, not weakness."

Top Trump administration officials had also signaled warnings about the threat China poses to the US, including former Director of National Intelligence John Ratcliffe in December, who said China is "the greatest national security threat that we face" on a range of issues—including militarily, economically, supply chain issues, technologically, cyber issues and 5G telecommunications.

McCaul raised concerns that the Biden administration wants "to be more open to China," pointing to Biden’s move to rejoin the Paris climate accord.

"I worry that they may soften on China to get certain things from them and open up more to China to get them to make concessions when it comes to the Paris Climate Accord," McCaul explained. "I would think, though, that would be a weakening of our foreign policy position toward the Chinese Communist Party."

"Trump was the first president in my lifetime to really stand up to the Chinese Communist Party, and it got their attention," he said.