P.M. Links: Romney vs. Trump, L.A. Police Investigating Knife Found on O.J. Simpson Property, U.S. Naval Forces Dispatched to South China Sea

• Is Mitt Romney working on a plan to block Donald Trump at the GOP convention?

• Police officials in Los Angeles are reportedly investigating and testing a knife that was recovered from property formerly belonging to O.J. Simpson.

• Donald Trump likes to say that if he’s elected president he’s going to build a border wall and make Mexico pay for it. Mexican Finance Minister Luis Videgaray thinks not. “Under no circumstance will Mexico pay for the wall that Mr. Trump is proposing,” Videgaray said this week. “It is an idea based on ignorance and has no foundation in the reality of North American integration.”

• “In a ‘show of force,’ the U.S. Navy dispatched an aircraft carrier and five escort ships to the South China Sea amid rising tensions between the U.S., China and other Southeast Asian nations claiming territory in the disputed region.”

• Turkish authorities have seized the country’s most widely circulated newspaper.

Follow us on Facebook and Twitter, and don‘t forget to sign up for Reason‘s daily updates for more content.