Baku, June 26, AZERTAC The most significant US gun control bill in nearly 30 years has been signed into law by President Joe Biden, according to BBC.It imposes tougher checks on young buyers and encourages states to remove guns from people considered a threat.Congress approved the legislation with bipartisan support this week, following a spate of mass shootings."While this bill doesn't do everything I want, it does include actions I've long called for that are going to save lives," Mr Biden admitted.In May shootings at a supermarket in Buffalo, New York, and a primary school in Uvalde, Texas, left a total of 31 people dead.As he signed the legislation on Saturday, Mr Biden said relatives of the victims expected the US government to do something. "Well today, we did," he added.The reforms include: Tougher background checks for buyers younger than 21, $15bn (£12.2bn) in federal funding for mental health programs and school security upgrades, funding to encourage states to implement "red flag" laws to remove firearms from people considered a threat, closing the so-called "boyfriend loophole" by banning all those convicted of domestic abuse from owning a gun - not just those who are married to their victims or live with them.