The U.K. decision was a big win for the Trump administration, which has sought to firewall Huawei from networks around the world while putting intense pressure on its closest ally to make such a move.
It is not clear how many Huawei employees would be affected.
China has hit out at the UK's decision to strip Huawei equipment from its 5G network, urging a "public and painful" revenge.
Pompeo said in his statement that telecommunications companies around the world "should consider themselves on notice: If they are doing business with Huawei, they are doing business with human rights abusers".
The decision was taken following a warning from the USA that Huawei could compromise national security by using its presence in the United Kingdom to spy on the country and potentially promote cyber-attacks - claims Huawei firmly denies.
"I think American businesses are saying this is not a place that we are comfortable with, and I'm watching as they're making different decisions about how to allocate capital inside of their business and inside of their supply chains as well".
In a separate statement referring to alleged abuses against China's minority Muslim population, Pompeo charged that Huawei was "an arm of the Chinese Communist Party's surveillance state that censors political dissidents and enables mass internment camps in Xinjiang and the indentured servitude of its population shipped all over China".
Culture Secretary Oliver Dowden has now announced in the Commons that Huawei 5G kits will be required to be removed from the United Kingdom by 2027.
The European Union has resisted blanket restrictions on Huawei.
"Europe is awakening to the threat of China", O'Brien told reporters.
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Nevada County isn't on the monitoring list , though it is still affected by the statewide closure of bars and indoor dining. The order comes after Newsom previously ordered these businesses to close in counties on the state's "watch list".
However the decision was heavily criticised by Donald Trump's administration and a growing group of rebel Conservatives.
A Huawei spokeswoman rejected Pompeo's comments.
China on Wednesday summoned the USA ambassador, Terry Branstad, after Trump signed a law that paved the way for sanctions over the situation in Hong Kong.
China described the moves as "gross interference" in its internal affairs and vowed to retaliate.
China said the remark showed the decision was about geopolitics rather than security.
U.S. lawmakers overwhelmingly approved the law, hoping that all but provincial Chinese banks will think twice before risking punishment in the world's largest economy. We still have work to do.
Britain has said that its ban on Huawei is motivated by its own security concerns and by worries that supplies of Huawei gear could be interrupted by US sanctions.
Trump has also loudly blamed China for COVID-19, news of which was suppressed when cases first emerged in Wuhan late past year.
The United States has pushed Johnson to reverse his January decision to grant Huawei a limited role in 5G, while London has been dismayed by a crackdown in Hong Kong and the perception China did not tell the whole truth over the coronavirus.