U.S. President Donald Trump is renewing focus on mental illness as a major cause of gun violence, following two mass shootings in two days in the U.S. that killed 31 people. VOA's Brian Padden reports that while Trump has called for more treatment and involuntary detention of mentally disturbed individuals, his administration has rolled back federal regulations to restrict the mentally ill from buying guns and has tried to abolish a health care law that expanded access to mental health services.