Trump claims strong congressional support for strengthening background checks for gun buys, at odds with GOP statements

President Trump expressed great confidence Friday that he could rally recalcitrant Republicans around legislation strengthening background checks and persuade the nation’s powerful gun lobby to drop its long-standing opposition to such measures, tasks that proved elusive following other mass shootings on his watch.

Appearing outside the White House, Trump claimed meetings in recent days had already yielded strong congressional support for “very meaningful background checks” and that his party, which has stymied gun-control efforts this year by Democrats, would take the lead in passing new legislation after returning from an...