The U.S. Army is deploying hundreds of soldiers to Texas' Rio Grande Valley in response to what it says are signs of elevated activity from Mexican drug cartels. Mexico also has sent hundreds of troops to the state of Tamaulipas across from Texas to coordinate with the U.S. The Army has been inviting reporters to see the area that once was the epicenter of illegal crossings to showcase its progress in stemming the flow. But some experts question the need for the surge and suggest it's more for show just weeks before the midterm elections. Republicans are facing increasing headwinds due to President Donald Trump’s unpopularity. Border security has remained a relative bright spot in Trump’s polling numbers.