President Donald Trump has condemned "racism, hatred and white supremacy" in an address following mass shootings that left 29 dead in Texas and Ohio.

He called for mental health gun control reforms, the death penalty for those who commit mass murder and more bi-partisan co-operation over gun laws.

"Mental health and hate pull the trigger, not the gun," Mr Trump said, speaking at the White House on Monday.

He did not express support for gun control measures proposed in Congress.

"In one voice, our nation must condemn racism, bigotry and white supremacy," Mr Trump said on Monday. "These sinister ideologies must be defeated. Hate has no place in America."

His comments came shortly before the suspect in the El Paso, Texas, shooting was charged with capital murder.