Six months after a deadly mass shooting by an Army reservist, Maine lawmakers this week passed a wide-ranging package of new gun restrictions.

Three months after a fatal school shooting, Iowa lawmakers this week passed legislation allowing trained teachers and staff to carry guns on school property.

Two states. Two tragedies. Two different approaches to improving public safety.

“We live in two different Americas, in essence,” said Daniel Webster, a health policy professor affiliated with the Johns Hopkins Center for Gun Violence Solutions.

“We see terrible acts of gun violence; no one wants them, of course,” Webster said. “But we see this through different lenses.”

Legislatures in about 20 states already have passed measures this year to expand gun rights or restrict access to firearms. Dozens more proposals are pending. The divide continues a trend seen last year, when more than half the states enacted firearms legislation, with Democrats generally favoring more limits and Republicans more freedoms for gun owners.