It was not clear how much action Trump could take on his own to make good on his renewed pledges. But his response - including blaming Senate Minority Leader Charles Schumer, D-N.Y., for helping create the visa program that allowed Saipov to enter the country - stood in sharp contrast to the White House's reaction to the mass shooting in Las Vegas last month that killed 59 people at a country music concert. After that attack by a Nevada man who killed himself, Trump denounced the shooter's act as "pure evil," but White House aides and Republican allies rejected calls by Democrats for a renewed debate over gun control laws, saying it was not appropriate to politicize the tragedy.