Maduro has had topsy-turvy relations with the US since his re-election in the 2018 elections. The US accused Maduro of occupying the Presidential post unconstitutionally in the country. But Maduro, backed by Russia and China, continued serving as the President.
The US declared charges against Maduro after an investigation by US Federal services. The US said that strict steps are necessary to remove deeply rooted corruption in Venezuela that has resulted in the crippling of its democracy and democratic values. Allegations on Maduro are that he helped the Colombian revolutionary group, the FARC for drug trafficking and flooding the United States with Cocaine. He is also accused of facilitating drug trafficking routes through air and water via Venezuela along with running a drug cartel even though he is occupying a government office.
Thus amid escalating tension, US and US allies evacuated their embassies from Venezuela. Besides Maduro, the US has filed charges against more than a dozen others that include Venezuelan government and intelligence officials and members of the Colombian rebel group FARC.
Maduro defended himself by saying that Donald Trump is politically motivated to remove him from the office. He added that before the US Presidential election, such a move might give Donald Trump fame, and thus he is trying hard to make it more political. He further said that by hook or crook the US wants him to vacate his post.