US Representative Ro Khanna, a Democrat, said on Twitter that "whether this was a joke or not, talking about being President for life like Xi Jinping is the most unAmerican sentiment expressed by an American President".
China has no desire to overturn the existing global order and its increasingly powerful military does not constitute a threat to others, the spokesman for the country's ceremonial legislature said Sunday.
It is conducive to uphold the authority of the Central Committee of the party with Xi Jinping at the core and also unified leadership.
The announcement Monday came at a meeting of China's ceremonial legislature that is overshadowed by proposed constitutional changes that would allow President Xi Jinping to remain in power indefinitely.
One of Nigeria's biggest trading and infrastructure partners, China, is set to amend its constitution for the first time in 14 years as its top legislative body, the National People's Congress (NPC), convenes for its annual session beginning today.
Last year military spending was budgeted to increase by just 7 percent, to 1.044 trillion yuan ($164.60 billion) about one-quarter of the proposed United States defence spending for the year.
Mr Xi, 64, concurrently holds the party posts of general secretary and chairman of the Central Military Commission, as well as the state positions of president and chairman of the state Central Military Commission.
Chinese censors banned the letter N on social media. The amendment says that opinions had been sought at the "grassroots level" and that "the masses, party members and cadres in many regions" had "unanimously called" for the revision of term limits.
During his Saturday remarks he reportedly also complained about US law enforcement's decision not to investigate his 2016 presidential rival Hillary Clinton over actions including the use of a private email server when she was secretary of State.
In an editorial on Tuesday, China's state-run Global Times criticised Western critics whose motives were put down to running scared from, "the rise of China and reaching a critical point where some Westerners can not psychologically bear it any longer".
Hua Po, a Beijing-based political commentator, said Xi was handed "a mess" when he took office five years ago and needs more time to finish the job.
Legislators also are due to endorse the appointment of economic and other officials picked by the party. "To do this, it is not enough for him to serve only two terms", Hua told AFP.