There are many reasons to believe that this is so.  A trail of tectonic damage that runs from Brownsville up the Rio Grande to Leadville Colorado and west to the Los Angeles basin provides evidence that this has been going on for a very long time, probably about 7 to 10 million years. The northern over thrust along the Rio Grande on the Mexico/Texas border leads to a separation in the crust, a rift valley, through central New Mexico. At the top of this, starting in southern Colorado, westward through Utah and all the way to Los Angeles, the sedimentary rock is shattered.  The Grand Canyon is a deep crustal fracture caused by the Mexican Disconnection that has been enlarged by wind and water.  The area west of the Colorado River consists of terranes accumulated by the continents westward migration, but the contours of the mountains are consistent with being battered continuously by westward movement of Arizona's high plateau.

The third factor is also part of the composition of this region.  There are two gravitational anomalies in this sub-continental mass, two very heavy spots.  These are presumed to be iron ore deposits at great depth beneath the West Coast of Mexico. The northern one is opposite the Baja peninsula and the southern is northwest of Mexico City.  Together they dig into the soft mantle below the crust, holding the region above in place and resisting the spreading forces of the oceanic ridges.

Examination of all the factors affecting Mexico/Central America must include the obvious differences between it and its neighbors to the north and south. The two continents eastern shores receive a nearly even amount of pressure from the mid-Atlantic ridge, while the eastern shores of Mexico face the fragmented basin of the Caribbean and receive little tectonic force from the mid-Atlantic ridge. Thus the westerly progress of North America has also served to "cock the hammer".  

Illustrating this idea is easy. Take a map of the area and place it over a corkboard. Put two pins in the two heavy spots in Mexico and pin the top of North America down also.  Using the flat of your hands apply pressure from the south.  When you do this, the tectonic features appear as the logical consequence of this force. The rotation of the land mass on its two pegs pulls down the northwest corner, where the Grand Canyon is, and it pulls the northeastern edge to the west and shoves the eastern coast north.  The shattered substrate at the northern boundary running through Colorado and Utah is now also easy to understand. The Rocky mountains also confirm this analysis being right where the force pushing up above the rift bulges the paper.

These factors comprise the energy, hammer and cocking mechanism necessary to shatter a continent, but what remains undetermined is the trigger that could set it off.

Global warming is threatening to raise the sea levels as a general melting of ice takes place around the world. The warming due to human-produced Greenhouse Gases is a fact that is now established, but the warming may may be only a slight acceleration and nature may not need our help to raise the sea levels.

Greenland's ice cores have told us that the mighty ice sheet that covered much of North America until about twelve thousand five hundred years ago melted away in only a few  hundreds of years. Although most the ice disappeared quickly, it is only presently that its last remnants are melting. Glacier National Park has almost vanished in the just the last one hundred years and similar melting is occurring at glaciers throughout the world.

We are talking about very little time in geological terms.  The continent's response to such an immense change in its weight and displacement on the mantle is still occurring. The fact that it is being pinched between the two major oceanic plates only exacerbates the problem.  When the continent will make its next major adjustment  is anybody's guess, but changes, big changes are scheduled for the West and we should do all we can to prepare.