Well, #1, it wasn't ignored. Unless you count the heads of the Republican party. Obama sanctioned Russia, confronted Putin personally so that he knew that we knew what they were doing. Mitch McConnell and other Republican leaders pushed back when the Obama admin asked them to work with them on containing Russia. Republican governors of vulnerable states also refused the help. But yeah, per usual, blame Obama. At this point, it appears that Republicans welcome the assistance from Russia. Trump asked for it in 2016 when he asked them to continue their hacking. It seems you also forget Trump complaining about how the election was rigged. i mean weren't you all up in arms because they decided to wiretap Carter Page because of his dealings with Russia? Talk about trying to have it both ways. Notice he blasts everyone in this thing...except the ones who did it, Russia. Weird huh?
Has Trump done ANYTHING to prevent the same thing in 2018 or 2020? Doubt it. Will he be held accountable? Not by any Republicans.
Trump always tries to steal credit for others accomplishments and then refuses to accept blame for anything. Literally anything that is bad is not his fault but everything good is. He sure hasn't said much about the stock market lately has he?
Hopefully the Dems can win the House and Senate and start impeaching this traitor.