It was Núñez’s decision over the Chinese-owned Chancay port that sparked some of Washington’s most direct criticism yet of Peru’s close ties with China.
The MTA faces an uphill battle with the Trump administration, which has been critical of how mass-transit agencies handle crime, as well as initiatives to contract with minority-owned businesses.
The NFU detailed its concerns over giving a single railroad control of nearly half of all U.S. rail traffic, and how that would potentially harm the country's agricultural supply chains.
While affecting only a tiny proportion of imports, the bans ramp up the showboating between the two countries in what is an increasingly contentious trade war.
Eligible goods will include American agricultural commodities, timber and medical equipment, as well as Chinese fireworks, tableware, toys and soccer balls.