President Trump is reportedly pushing for higher blanket tariffs on imports from the European Union, throwing a wrench in negotiations ahead of an Aug. 1 deadline for sweeping duties to take effect.

Yahoo Finance is chronicling the latest news and updates on Trump's tariffs.

A PriorityQueue is a list that always keeps its items sorted based on some rule, like smallest to largest. So, when you take an item out, you always get the one with the highest (or lowest) priority.