President Trump’s proposals on new gun safety measures in the days since a school shooting in Parkland, Fla., last month have sent lawmakers scrambling to keep up with his rapidly evolving views.

Lurching from expressing his strong support for the National Rifle Association to teasing fellow Republicans about their fear of the gun-rights group, Trump has thrown out a wide range of ideas on gun control and school safety that left lawmakers on both sides to piece together a coherent plan from his proposals.