President Donald Trump said Monday’s attack on New York City’s Port Authority Bus Terminal was the result of a “lax” immigration system that “allows far too many dangerous, inadequately vetted people to access our country.”

“The terrible harm that this flawed system inflicts on America’s security and economy has long been clear,” Trump said in a White House statement. “I am determined to improve our immigration system to put our country and our people first.”

Trump said that his travel ban for residents of six Muslim-majority countries, which the Supreme Court recently allowed enforcement of in full, was “one step forward in securing…