Eduardo Bolsonaro, head of the foreign affairs committee in Brazil's lower house of congress, said the government should adopt a practical approach to Argentina under the neighbour country's incoming leftist administration.
"We don't have to be enamored with them to do business with them," Bolsonaro, also the son of Brazil's president, said. "We have to act pragmatically."
Jair Bolsonaro publicly supported outgoing president Mauricio Macri during the campaign. When Alberto Fernández won, the Brazil leader was equally public in his lamentation of the results, calling it a "bad choice" by the voters.
Since then, Fernández has offered his unconditional support to Brazil's former president, Luiz Inácio Lula da Silva, a fierce opponent from the left to Bolsonaro.
Bolsonaro won't attend the inauguration of Argentina's president-elect on December 10.
Behind the United States and China, Argentina is Brazil's third largest commercial partner. Annually, trade between the two reached more than US$27 billion in 2018.
Around half of Brazilian exports to Argentina are from the automotive or manufacturing sectors. In other words, it's one of the only countries that buys products that Brazil had added value to rather than just its raw materials. Argentina is also the second highest buyer of Brazilian shoes behind the United States.