Are 26 examples enough? There are plenty more, for those who care to look.
The situation at the border is so terrible in part because those in power, and those cheering them on in the media, have steadfastly resisted common-sense measures to reduce the flow of illegal migrants — the large majority of whom do not have a valid claim of asylum — across the border. The resulting paralysis in border policy encourages more migrants to come, making the situation worse by the day.
Perhaps some of those quoted above only want to deny the president a victory, no matter how sensible. Perhaps others are simply looking for a partisan advantage. Perhaps some sincerely believe in open, or virtually open, borders. It does not matter what their motives are. The crisis — yes, crisis — at the border worsens every day they do not act.