Senate Minority Leader Charles Schumer Chuck SchumerVideo of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Graham signals support for confirming a Supreme Court nominee this year Pelosi orders Capitol flags at half-staff to honor Ginsburg MORE (D-N.Y.) said Thursday that he is "amazed" at how quickly President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE bowed to the National Rifle Association (NRA) after he threw his support behind a proposal to arm trained teachers.

"Not surprised the NRA reeled President Trump back in," Schumer said in a statement. "Just amazed at how fast it happened."

Schumer's comment came after another statement earlier Thursday, in which he accused Trump of having caved to the NRA's demands related to guns in the past.

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"I hope this time will be different," Schumer said in the earlier statement.

Trump signaled a shift on gun control reform this week after facing pressure to act following a deadly shooting at a South Florida high school.

He suggested in a tweet Thursday that his administration would push for stricter background checks for gun purchases and would seek to raise the age to buy guns.

But he also voiced support for a plan to implement concealed carry for highly trained teachers and get rid of gun-free zones around schools.

Schumer's second statement on Thursday did not follow any further comments from Trump.

In another tweet on Thursday, Trump defended the NRA, which has faced intense scrutiny in recent days, calling the organization's leaders "Great People and Great American Patriots."