If in 2016, you expected this 40 year old, 30 million person scourge to improve in 15 months, the month you showed up here complaining, then you didn't understand the depth and complexity of the problem or what was required to "improve" it.
People who didn't vote Republican on November 6, 2018 or who said or did anything prior to that date that would have or might have and probably did cause someone else or several someone elses not to vote Republican on November 6, 2018 are the collective body of Americans who I believe sold out the United States on this issue and several others. Was that their intent or an unexpected outcome for them? I don't know, these were pretty smart people that I saw and heard doing this, so I don't think they did it by mistake or accident, but I guess there's always the possibility that they weren't as smart as I thought they were or they at least otherwise seemed to be. Some were even bragging about it, proud of it, even using the loss to raise money.
A Real Life Real Time Political Twilight Zone.
And according to you the Republicans hold no blame at all for this 40 year old scoruge.
Red= Republican majority
Green= tied
Senate---------- House-----------
Dem Rep Oth Dem Rep Oth
1978 58 41 1 277 158 0-------------Carter
1980 46 53 1 242 192 1
1982 46 54 0 269 166 0-------------Reagan
1984 47 53 0 253 182 0
1986 55 45 0 258 177 0
1988 55 45 0 260 175 0
1990 56 44 0 267 167 1 -----------Bush Sr.
1992 57 43 0 258 176 1
1994 48 52 0 204 230 1 --------Clinton
1996 45 55 0 207 226 2
1998 45 55 0 211 223 1
2000 50 50 0 212 221 2
2002 48 51 1 205 229 1------Bush Jr.
2004 44 55 1 202 231 2
2006 49 49 2 233 198 4
2008 57 41 2 256 178 1 ----------Obama
2010 51 47 2 193 242 0
2012 54 45 1 201 234 0
2014 44 54 2 188 246 1
2016 46 52 2 194 241 0 -------Trump
LOL!! You have no idea who I've held responsible for this scourge for the past 40 years. But you will know now who I know isn't responsible for it, who has tried for 2 years to stop it, end it and fix it, who has blocked every single one of those efforts, and who is now responsible for it going forward.
P. S. You forgot your link to your chart.
BTTT.