The architect of that repeal, Federal Communications Commission Chairman Ajit Pai, must still contend with a challenge to his efforts in federal court, a campaign on Capitol Hill to roll his changes back and a slew of states that are looking to regulate in the FCC's place.
Porto also have to contend with a challenge from the other side of the capital.
He might be the most vulnerable Republican running in 2018 and is contending with a primary challenge from the Trump wing of the party.
The 28-nation military alliance is contending with a confluence of challenges, including Russian incursions in the east, attacks by Muslim extremists on European capitals and the threat of cyberwarfare.
The fission of divergent ideologies can be frustrating even violent but contending with a different worldview also challenges and expands a mind.
But Ratner must also contend with a legal challenge.
Still, Mr. Ratner must contend with a legal challenge by opponents and a weak real estate market that could undercut plans to build as many as 6,400 apartments at Atlantic Yards.
Besides the economic challenge, the industry is contending with a small but growing number of complaints about the results of Lasik procedures — an issue to be discussed at a federal regulatory hearing on Friday.
In other motorsports news: Sebastian Vettel contended with an aggressive challenge from Fernando Alonso, but Vettel, the 2010 Formula One champion, finished strongly to win the Italian Grand Prix at Monza.
Instead, it had to contend with a growing military challenge from China, and a host of smaller adversaries, many of them oil-rich countries with a majority-Muslim population: Iraq, Libya, Iran, Sudan.
The scientists had to contend with a variety of challenges, including being able to collect enough blood from Scott (blood volume shrinks during space flight due to dehydration. One shipment of equipment blew up aboard a SpaceX rocket.
