TRUMP
Trump is acting as he believes appropriate. Republican voters agree, in large numbers. He believes that his tough (mean spirited and racist) stances on the border will reduce the number of those who would take the risks to come so far to seek asylum. He has negotiated with the all 4 countries involved, and has gotten almost no actual cooperation. Democrats act as if the asylum seekers are Mexicans escaping Mexican gangs. That is not primarily the case. The 3 Central American countries allow their citizens to leave in increasing numbers. Mexico allows them in (even with their tough laws) and allows them to come over a thousand miles to seek asylum in the US. Trump is furious will all the countries involved. The US will not accept hundreds of thousands of asylum seekers into a process whereby half will be allowed into the US and be eligible to apply for citizenship (after a year).
Do YOU propose accepting hundreds of thousands (or millions) into the US as asylum seekers, or even as temporary refugees?
Trump has plenty on his plate. He doesn't see his role as organizing NGO's to take care of asylum seekers who shouldn't be at out borders in the first place. BTW, is trump wrong? If the asylum seekers were treated very, very well in Mexico as they were in line to gain admittance into he US, do You think that FEWER would come. Of course not; millions would come next quarter. The answer is to stop he huge numbers hundreds of miles from our border.
You complain about Trump's communications with his base. Well, they agree with him, and they are loyal to him (includinging evangelicals).
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REPUBLICANS IN CONGRESS
Obviously, Republicans in Congress have little interest ind doing anything. They have the responsibility to work with Democrats to put legislation on Trump's desk. They have mad their deal with Trump, and they fear being primaried.
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DEMOCRATS IN CONGRESS
OK, where is the Democratic House bill that addresses this problem. Perhaps this is more important than passing the Green New Deal, perhaps not. But passing legislation that shows us the the Democratic position would be very useful. Some republicans would support such a bill. Personally, I haven't a CLUE what the Democratic position really is, other than NO WALL. Do Democrats support sending billions of aid to the 4 countries? So Democrats favor giving billions to NGO's? Do Democrats favor a coalition of countries working together (which will aisles cost billions). What actions do Democrats favor to convince the 4 countries that we the US WILL NOT accept hundreds of thousands into the US, and that having that many trying every month is unacceptable.
We hear cries for more judges, better facilities on both sides of the border. This will decrease the 700K backlog. If we reduced it to zero tomorrow, that would mean accepting 350K or so into the US. Are Democrats proposing that? If the process were improved, that would mean millions more would come, even with a few billion in aid to the 4 countries.
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SOME CONCLUSIONS
The Democrats don't have a position. If there is one that is consistent with Democratic and US values, that position would include
1) billions in aid in a longterm aid program to the 3 Central American countries, starting with those most willing an able to receive help.
2) Better facilities and many steps to improve the process.
3) Incentives and penalties to Mexico to get them to reject these seekers at THEIR Southern border.
4) A significant increase in the number of asylum seekers that will be accepted each year; at very least, there should be a new group of emergency refugees (those form 10 year ago are still here).
HOWEVER, this is very poor politics. Democrats have their immigration priorities. They include
a) a path to citizenship for DACA folks
b) a path to citizenship, or a formal extension to emergencies refugees from 10 years ago
c) an immigration deal that grants at least legal status to the undocumented within the US
d) enforcement processes that punish businesses, rather than employees
e) an extended worker program
If Democrats were to have an immigration fight, those on the border are of relatively low priority, other than the obvious humanitarian tragedies at the border. Dems cannot suggest accepting million of new refugees. So, the Dems are making the humanitarian tragedies their political football, hoping to win the immigration issue in the 2020 campaign.
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BOTTOM LINE
This will definitely be an issue in the 2020 campaign. Voters have this issue in their top 3. Russian collusion and corruption is not even on the radar, except for left wing Democrats who will vote agains t Trumps in any case.
Trump's position is that there is indeed a crisis on the Southern border, and that hundreds of thousands who are pouring across Mexico to the border is a humanitarian and security crisis for the US, and that the US will not accept large numbers of refugees in to the US. Democrats disagree and seem to believe that a NO WALL slogan, and that the asylum seekers are being mistreated will somehow win the day.
Democrats believe that Trump's campaign is failing. I disagree. He now has 6 strong issues: the economy, the judiciary, military improvement, immigration, the "no collusion" conclusion by Mueller, and the impractical far left proposals of the Democrats (including the Green New Deal).
Trump has 2 losing issues: corruption/incompetence of his administration, and health care. The first is an illusion if awing overs believe that the country is better off. Trump has 18 months to try to reduce the effect of the health care issue. At very least, he has a winner against most of the Democratic healthcare proposals.
...the asylum process is overwhelmed. You could even say there is a refugee crises on both sides of the border...for several months now.
Yet....
Where is the call for NGO refugee agencies who have the skill set to deal with such problems?
Is the Trump Administration asking Congress for solutions in resolving this issue?
No.
Instead we hear messages designed to appeal to Trump's base:
"Build the Wall"
"Close the Border"
"Cut off aid to Central America"
None of those will resolve the current issue and in fact, only exacerbate more immigration. As long as Central Americas correctly perceive there is path to the US via the asylum process -- they will continue to come.